Home / 42,374.20-63,545.64-12,783.28

Finding the Fourth Proportional to 42,374.20, 63,545.64 and 12,783.28

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Solution

The fourth proportional to 42,374.20, 63,545.64 and 12,783.28 is: 19,170.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,374.20 : 63,545.64 = 12,783.28 : x
  2. Step 2: Convert to fraction form
    42,374.20/63,545.64 = 12,783.28/x
  3. Step 3: Cross multiply
    42,374.20x = 63,545.64 × 12,783.28
  4. Step 4: Simplify right side
    42,374.20x = 812,321,708.90
  5. Step 5: Solve for x
    x = 812,321,708.90/42,374.20
  6. Step 6: Final answer
    x = 19,170.20

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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.