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Finding the Fourth Proportional to 10,501.98, 15,752.97 and 8,645.65

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Solution

The fourth proportional to 10,501.98, 15,752.97 and 8,645.65 is: 12,968.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,501.98 : 15,752.97 = 8,645.65 : x
  2. Step 2: Convert to fraction form
    10,501.98/15,752.97 = 8,645.65/x
  3. Step 3: Cross multiply
    10,501.98x = 15,752.97 × 8,645.65
  4. Step 4: Simplify right side
    10,501.98x = 136,194,593.28
  5. Step 5: Solve for x
    x = 136,194,593.28/10,501.98
  6. Step 6: Final answer
    x = 12,968.47

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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.