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Finding the Fourth Proportional to 15,010.16, 20,715.28 and 8,722.13

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Solution

The fourth proportional to 15,010.16, 20,715.28 and 8,722.13 is: 12,037.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,010.16 : 20,715.28 = 8,722.13 : x
  2. Step 2: Convert to fraction form
    15,010.16/20,715.28 = 8,722.13/x
  3. Step 3: Cross multiply
    15,010.16x = 20,715.28 × 8,722.13
  4. Step 4: Simplify right side
    15,010.16x = 180,681,239.76
  5. Step 5: Solve for x
    x = 180,681,239.76/15,010.16
  6. Step 6: Final answer
    x = 12,037.27

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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.