Home / 19,721.60-29,595.12-12,700.88

Finding the Fourth Proportional to 19,721.60, 29,595.12 and 12,700.88

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Solution

The fourth proportional to 19,721.60, 29,595.12 and 12,700.88 is: 19,059.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,721.60 : 29,595.12 = 12,700.88 : x
  2. Step 2: Convert to fraction form
    19,721.60/29,595.12 = 12,700.88/x
  3. Step 3: Cross multiply
    19,721.60x = 29,595.12 × 12,700.88
  4. Step 4: Simplify right side
    19,721.60x = 375,884,067.71
  5. Step 5: Solve for x
    x = 375,884,067.71/19,721.60
  6. Step 6: Final answer
    x = 19,059.51

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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.