Home / 42,382.60-63,574.40-12,800.68

Finding the Fourth Proportional to 42,382.60, 63,574.40 and 12,800.68

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Solution

The fourth proportional to 42,382.60, 63,574.40 and 12,800.68 is: 19,201.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,382.60 : 63,574.40 = 12,800.68 : x
  2. Step 2: Convert to fraction form
    42,382.60/63,574.40 = 12,800.68/x
  3. Step 3: Cross multiply
    42,382.60x = 63,574.40 × 12,800.68
  4. Step 4: Simplify right side
    42,382.60x = 813,795,550.59
  5. Step 5: Solve for x
    x = 813,795,550.59/42,382.60
  6. Step 6: Final answer
    x = 19,201.17

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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.