Home / 42,017.40-63,026.10-12,432.60

Finding the Fourth Proportional to 42,017.40, 63,026.10 and 12,432.60

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Solution

The fourth proportional to 42,017.40, 63,026.10 and 12,432.60 is: 18,648.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,017.40 : 63,026.10 = 12,432.60 : x
  2. Step 2: Convert to fraction form
    42,017.40/63,026.10 = 12,432.60/x
  3. Step 3: Cross multiply
    42,017.40x = 63,026.10 × 12,432.60
  4. Step 4: Simplify right side
    42,017.40x = 783,578,290.86
  5. Step 5: Solve for x
    x = 783,578,290.86/42,017.40
  6. Step 6: Final answer
    x = 18,648.90

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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.