Home / 42,454.40-63,669.45-12,865.10

Finding the Fourth Proportional to 42,454.40, 63,669.45 and 12,865.10

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Solution

The fourth proportional to 42,454.40, 63,669.45 and 12,865.10 is: 19,293.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,454.40 : 63,669.45 = 12,865.10 : x
  2. Step 2: Convert to fraction form
    42,454.40/63,669.45 = 12,865.10/x
  3. Step 3: Cross multiply
    42,454.40x = 63,669.45 × 12,865.10
  4. Step 4: Simplify right side
    42,454.40x = 819,113,841.20
  5. Step 5: Solve for x
    x = 819,113,841.20/42,454.40
  6. Step 6: Final answer
    x = 19,293.97

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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.