Home / 42,434.40-63,669.83-21,657.90

Finding the Fourth Proportional to 42,434.40, 63,669.83 and 21,657.90

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Solution

The fourth proportional to 42,434.40, 63,669.83 and 21,657.90 is: 32,496.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,434.40 : 63,669.83 = 21,657.90 : x
  2. Step 2: Convert to fraction form
    42,434.40/63,669.83 = 21,657.90/x
  3. Step 3: Cross multiply
    42,434.40x = 63,669.83 × 21,657.90
  4. Step 4: Simplify right side
    42,434.40x = 1,378,954,702.87
  5. Step 5: Solve for x
    x = 1,378,954,702.87/42,434.40
  6. Step 6: Final answer
    x = 32,496.15

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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.