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Finding the Fourth Proportional to 15,909.04, 21,950.04 and 9,946.78

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Solution

The fourth proportional to 15,909.04, 21,950.04 and 9,946.78 is: 13,723.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,909.04 : 21,950.04 = 9,946.78 : x
  2. Step 2: Convert to fraction form
    15,909.04/21,950.04 = 9,946.78/x
  3. Step 3: Cross multiply
    15,909.04x = 21,950.04 × 9,946.78
  4. Step 4: Simplify right side
    15,909.04x = 218,332,218.87
  5. Step 5: Solve for x
    x = 218,332,218.87/15,909.04
  6. Step 6: Final answer
    x = 13,723.78

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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.