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Finding the Fourth Proportional to 21,663.59, 32,532.44 and 13,392.54

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Solution

The fourth proportional to 21,663.59, 32,532.44 and 13,392.54 is: 20,111.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,663.59 : 32,532.44 = 13,392.54 : x
  2. Step 2: Convert to fraction form
    21,663.59/32,532.44 = 13,392.54/x
  3. Step 3: Cross multiply
    21,663.59x = 32,532.44 × 13,392.54
  4. Step 4: Simplify right side
    21,663.59x = 435,691,937.03
  5. Step 5: Solve for x
    x = 435,691,937.03/21,663.59
  6. Step 6: Final answer
    x = 20,111.72

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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.