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Finding the Fourth Proportional to 10,299.13, 15,411.76 and 8,917.22

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Solution

The fourth proportional to 10,299.13, 15,411.76 and 8,917.22 is: 13,343.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,299.13 : 15,411.76 = 8,917.22 : x
  2. Step 2: Convert to fraction form
    10,299.13/15,411.76 = 8,917.22/x
  3. Step 3: Cross multiply
    10,299.13x = 15,411.76 × 8,917.22
  4. Step 4: Simplify right side
    10,299.13x = 137,430,070.74
  5. Step 5: Solve for x
    x = 137,430,070.74/10,299.13
  6. Step 6: Final answer
    x = 13,343.86

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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.