Home / 10,918,809.10-16,378,213.65-8,399,385.10

Finding the Fourth Proportional to 10,918,809.10, 16,378,213.65 and 8,399,385.10

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Solution

The fourth proportional to 10,918,809.10, 16,378,213.65 and 8,399,385.10 is: 12,599,077.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,918,809.10 : 16,378,213.65 = 8,399,385.10 : x
  2. Step 2: Convert to fraction form
    10,918,809.10/16,378,213.65 = 8,399,385.10/x
  3. Step 3: Cross multiply
    10,918,809.10x = 16,378,213.65 × 8,399,385.10
  4. Step 4: Simplify right side
    10,918,809.10x = 137,566,923,696,426.61
  5. Step 5: Solve for x
    x = 137,566,923,696,426.61/10,918,809.10
  6. Step 6: Final answer
    x = 12,599,077.65

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.