Home / 42,391.21-63,587.39-12,809.29

Finding the Fourth Proportional to 42,391.21, 63,587.39 and 12,809.29

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Solution

The fourth proportional to 42,391.21, 63,587.39 and 12,809.29 is: 19,214.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,391.21 : 63,587.39 = 12,809.29 : x
  2. Step 2: Convert to fraction form
    42,391.21/63,587.39 = 12,809.29/x
  3. Step 3: Cross multiply
    42,391.21x = 63,587.39 × 12,809.29
  4. Step 4: Simplify right side
    42,391.21x = 814,509,318.85
  5. Step 5: Solve for x
    x = 814,509,318.85/42,391.21
  6. Step 6: Final answer
    x = 19,214.11

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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.