Home / 42,403.59-63,606.39-12,821.31

Finding the Fourth Proportional to 42,403.59, 63,606.39 and 12,821.31

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Solution

The fourth proportional to 42,403.59, 63,606.39 and 12,821.31 is: 19,232.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,403.59 : 63,606.39 = 12,821.31 : x
  2. Step 2: Convert to fraction form
    42,403.59/63,606.39 = 12,821.31/x
  3. Step 3: Cross multiply
    42,403.59x = 63,606.39 × 12,821.31
  4. Step 4: Simplify right side
    42,403.59x = 815,517,244.17
  5. Step 5: Solve for x
    x = 815,517,244.17/42,403.59
  6. Step 6: Final answer
    x = 19,232.27

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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.