Home / 42,420.25-63,619.86-14,339.68

Finding the Fourth Proportional to 42,420.25, 63,619.86 and 14,339.68

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Solution

The fourth proportional to 42,420.25, 63,619.86 and 14,339.68 is: 21,505.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,420.25 : 63,619.86 = 14,339.68 : x
  2. Step 2: Convert to fraction form
    42,420.25/63,619.86 = 14,339.68/x
  3. Step 3: Cross multiply
    42,420.25x = 63,619.86 × 14,339.68
  4. Step 4: Simplify right side
    42,420.25x = 912,288,275.00
  5. Step 5: Solve for x
    x = 912,288,275.00/42,420.25
  6. Step 6: Final answer
    x = 21,505.96

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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.