Home / 42,649.20-63,973.80-18,956.70

Finding the Fourth Proportional to 42,649.20, 63,973.80 and 18,956.70

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Solution

The fourth proportional to 42,649.20, 63,973.80 and 18,956.70 is: 28,435.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,649.20 : 63,973.80 = 18,956.70 : x
  2. Step 2: Convert to fraction form
    42,649.20/63,973.80 = 18,956.70/x
  3. Step 3: Cross multiply
    42,649.20x = 63,973.80 × 18,956.70
  4. Step 4: Simplify right side
    42,649.20x = 1,212,732,134.46
  5. Step 5: Solve for x
    x = 1,212,732,134.46/42,649.20
  6. Step 6: Final answer
    x = 28,435.05

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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.