Home / 12,311.19-16,988.13-7,275.62

Finding the Fourth Proportional to 12,311.19, 16,988.13 and 7,275.62

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Solution

The fourth proportional to 12,311.19, 16,988.13 and 7,275.62 is: 10,039.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,311.19 : 16,988.13 = 7,275.62 : x
  2. Step 2: Convert to fraction form
    12,311.19/16,988.13 = 7,275.62/x
  3. Step 3: Cross multiply
    12,311.19x = 16,988.13 × 7,275.62
  4. Step 4: Simplify right side
    12,311.19x = 123,599,220.86
  5. Step 5: Solve for x
    x = 123,599,220.86/12,311.19
  6. Step 6: Final answer
    x = 10,039.58

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.