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Finding the Fourth Proportional to 15,135.88, 20,897.81 and 9,472.92

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Solution

The fourth proportional to 15,135.88, 20,897.81 and 9,472.92 is: 13,079.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,135.88 : 20,897.81 = 9,472.92 : x
  2. Step 2: Convert to fraction form
    15,135.88/20,897.81 = 9,472.92/x
  3. Step 3: Cross multiply
    15,135.88x = 20,897.81 × 9,472.92
  4. Step 4: Simplify right side
    15,135.88x = 197,963,282.31
  5. Step 5: Solve for x
    x = 197,963,282.31/15,135.88
  6. Step 6: Final answer
    x = 13,079.07

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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.