Home / 19,721.60-29,539.20-17,532.80

Finding the Fourth Proportional to 19,721.60, 29,539.20 and 17,532.80

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Solution

The fourth proportional to 19,721.60, 29,539.20 and 17,532.80 is: 26,260.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,721.60 : 29,539.20 = 17,532.80 : x
  2. Step 2: Convert to fraction form
    19,721.60/29,539.20 = 17,532.80/x
  3. Step 3: Cross multiply
    19,721.60x = 29,539.20 × 17,532.80
  4. Step 4: Simplify right side
    19,721.60x = 517,904,885.76
  5. Step 5: Solve for x
    x = 517,904,885.76/19,721.60
  6. Step 6: Final answer
    x = 26,260.79

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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.