Home / 13,721.83-20,587.67-5,397.23

Finding the Fourth Proportional to 13,721.83, 20,587.67 and 5,397.23

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Solution

The fourth proportional to 13,721.83, 20,587.67 and 5,397.23 is: 8,097.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,721.83 : 20,587.67 = 5,397.23 : x
  2. Step 2: Convert to fraction form
    13,721.83/20,587.67 = 5,397.23/x
  3. Step 3: Cross multiply
    13,721.83x = 20,587.67 × 5,397.23
  4. Step 4: Simplify right side
    13,721.83x = 111,116,363.17
  5. Step 5: Solve for x
    x = 111,116,363.17/13,721.83
  6. Step 6: Final answer
    x = 8,097.78

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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.