Home / 42,457.87-63,684.73-12,470.86

Finding the Fourth Proportional to 42,457.87, 63,684.73 and 12,470.86

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Solution

The fourth proportional to 42,457.87, 63,684.73 and 12,470.86 is: 18,705.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,457.87 : 63,684.73 = 12,470.86 : x
  2. Step 2: Convert to fraction form
    42,457.87/63,684.73 = 12,470.86/x
  3. Step 3: Cross multiply
    42,457.87x = 63,684.73 × 12,470.86
  4. Step 4: Simplify right side
    42,457.87x = 794,203,447.16
  5. Step 5: Solve for x
    x = 794,203,447.16/42,457.87
  6. Step 6: Final answer
    x = 18,705.68

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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.