Home / 20,695.17-28,559.30-11,263.71

Finding the Fourth Proportional to 20,695.17, 28,559.30 and 11,263.71

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Solution

The fourth proportional to 20,695.17, 28,559.30 and 11,263.71 is: 15,543.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,695.17 : 28,559.30 = 11,263.71 : x
  2. Step 2: Convert to fraction form
    20,695.17/28,559.30 = 11,263.71/x
  3. Step 3: Cross multiply
    20,695.17x = 28,559.30 × 11,263.71
  4. Step 4: Simplify right side
    20,695.17x = 321,683,616.68
  5. Step 5: Solve for x
    x = 321,683,616.68/20,695.17
  6. Step 6: Final answer
    x = 15,543.90

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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.