Home / 42,437.60-63,640.20-12,845.60

Finding the Fourth Proportional to 42,437.60, 63,640.20 and 12,845.60

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Solution

The fourth proportional to 42,437.60, 63,640.20 and 12,845.60 is: 19,263.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,437.60 : 63,640.20 = 12,845.60 : x
  2. Step 2: Convert to fraction form
    42,437.60/63,640.20 = 12,845.60/x
  3. Step 3: Cross multiply
    42,437.60x = 63,640.20 × 12,845.60
  4. Step 4: Simplify right side
    42,437.60x = 817,496,553.12
  5. Step 5: Solve for x
    x = 817,496,553.12/42,437.60
  6. Step 6: Final answer
    x = 19,263.50

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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.