Home / 20,561.28-30,821.36-9,475.98

Finding the Fourth Proportional to 20,561.28, 30,821.36 and 9,475.98

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Solution

The fourth proportional to 20,561.28, 30,821.36 and 9,475.98 is: 14,204.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,561.28 : 30,821.36 = 9,475.98 : x
  2. Step 2: Convert to fraction form
    20,561.28/30,821.36 = 9,475.98/x
  3. Step 3: Cross multiply
    20,561.28x = 30,821.36 × 9,475.98
  4. Step 4: Simplify right side
    20,561.28x = 292,062,543.55
  5. Step 5: Solve for x
    x = 292,062,543.55/20,561.28
  6. Step 6: Final answer
    x = 14,204.49

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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.