Home / 20,534.80-28,343.19-11,587.47

Finding the Fourth Proportional to 20,534.80, 28,343.19 and 11,587.47

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Solution

The fourth proportional to 20,534.80, 28,343.19 and 11,587.47 is: 15,993.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,534.80 : 28,343.19 = 11,587.47 : x
  2. Step 2: Convert to fraction form
    20,534.80/28,343.19 = 11,587.47/x
  3. Step 3: Cross multiply
    20,534.80x = 28,343.19 × 11,587.47
  4. Step 4: Simplify right side
    20,534.80x = 328,425,722.11
  5. Step 5: Solve for x
    x = 328,425,722.11/20,534.80
  6. Step 6: Final answer
    x = 15,993.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.