Home / 19,721.57-29,577.08-13,480.52

Finding the Fourth Proportional to 19,721.57, 29,577.08 and 13,480.52

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Solution

The fourth proportional to 19,721.57, 29,577.08 and 13,480.52 is: 20,217.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,721.57 : 29,577.08 = 13,480.52 : x
  2. Step 2: Convert to fraction form
    19,721.57/29,577.08 = 13,480.52/x
  3. Step 3: Cross multiply
    19,721.57x = 29,577.08 × 13,480.52
  4. Step 4: Simplify right side
    19,721.57x = 398,714,304.30
  5. Step 5: Solve for x
    x = 398,714,304.30/19,721.57
  6. Step 6: Final answer
    x = 20,217.17

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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.