Home / 20,448.30-30,672.45-20,156.70

Finding the Fourth Proportional to 20,448.30, 30,672.45 and 20,156.70

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Solution

The fourth proportional to 20,448.30, 30,672.45 and 20,156.70 is: 30,235.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,448.30 : 30,672.45 = 20,156.70 : x
  2. Step 2: Convert to fraction form
    20,448.30/30,672.45 = 20,156.70/x
  3. Step 3: Cross multiply
    20,448.30x = 30,672.45 × 20,156.70
  4. Step 4: Simplify right side
    20,448.30x = 618,255,372.92
  5. Step 5: Solve for x
    x = 618,255,372.92/20,448.30
  6. Step 6: Final answer
    x = 30,235.05

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Similar ratio
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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.