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Finding the Fourth Proportional to 15,551.43, 21,461.41 and 9,502.66

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Solution

The fourth proportional to 15,551.43, 21,461.41 and 9,502.66 is: 13,113.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,551.43 : 21,461.41 = 9,502.66 : x
  2. Step 2: Convert to fraction form
    15,551.43/21,461.41 = 9,502.66/x
  3. Step 3: Cross multiply
    15,551.43x = 21,461.41 × 9,502.66
  4. Step 4: Simplify right side
    15,551.43x = 203,940,375.04
  5. Step 5: Solve for x
    x = 203,940,375.04/15,551.43
  6. Step 6: Final answer
    x = 13,113.93

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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.