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Finding the Fourth Proportional to 10,113.32, 15,169.98 and 3,953

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Solution

The fourth proportional to 10,113.32, 15,169.98 and 3,953 is: 5,929.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,113.32 : 15,169.98 = 3,953 : x
  2. Step 2: Convert to fraction form
    10,113.32/15,169.98 = 3,953/x
  3. Step 3: Cross multiply
    10,113.32x = 15,169.98 × 3,953
  4. Step 4: Simplify right side
    10,113.32x = 59,966,930.94
  5. Step 5: Solve for x
    x = 59,966,930.94/10,113.32
  6. Step 6: Final answer
    x = 5,929.50

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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.