Home / 42,014.17-63,021.78-12,432.64

Finding the Fourth Proportional to 42,014.17, 63,021.78 and 12,432.64

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Solution

The fourth proportional to 42,014.17, 63,021.78 and 12,432.64 is: 18,649.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,014.17 : 63,021.78 = 12,432.64 : x
  2. Step 2: Convert to fraction form
    42,014.17/63,021.78 = 12,432.64/x
  3. Step 3: Cross multiply
    42,014.17x = 63,021.78 × 12,432.64
  4. Step 4: Simplify right side
    42,014.17x = 783,527,102.90
  5. Step 5: Solve for x
    x = 783,527,102.90/42,014.17
  6. Step 6: Final answer
    x = 18,649.12

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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.