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Finding the Fourth Proportional to 21,304.80, 31,957.20 and 14,623.20

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Solution

The fourth proportional to 21,304.80, 31,957.20 and 14,623.20 is: 21,934.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,304.80 : 31,957.20 = 14,623.20 : x
  2. Step 2: Convert to fraction form
    21,304.80/31,957.20 = 14,623.20/x
  3. Step 3: Cross multiply
    21,304.80x = 31,957.20 × 14,623.20
  4. Step 4: Simplify right side
    21,304.80x = 467,316,527.04
  5. Step 5: Solve for x
    x = 467,316,527.04/21,304.80
  6. Step 6: Final answer
    x = 21,934.80

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Similar ratio
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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.