Home / 19,981.60-29,932.80-17,519.20

Finding the Fourth Proportional to 19,981.60, 29,932.80 and 17,519.20

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Solution

The fourth proportional to 19,981.60, 29,932.80 and 17,519.20 is: 26,244.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,981.60 : 29,932.80 = 17,519.20 : x
  2. Step 2: Convert to fraction form
    19,981.60/29,932.80 = 17,519.20/x
  3. Step 3: Cross multiply
    19,981.60x = 29,932.80 × 17,519.20
  4. Step 4: Simplify right side
    19,981.60x = 524,398,709.76
  5. Step 5: Solve for x
    x = 524,398,709.76/19,981.60
  6. Step 6: Final answer
    x = 26,244.08

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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.