Home / 42,029.40-63,035.36-12,440.28

Finding the Fourth Proportional to 42,029.40, 63,035.36 and 12,440.28

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Solution

The fourth proportional to 42,029.40, 63,035.36 and 12,440.28 is: 18,657.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,029.40 : 63,035.36 = 12,440.28 : x
  2. Step 2: Convert to fraction form
    42,029.40/63,035.36 = 12,440.28/x
  3. Step 3: Cross multiply
    42,029.40x = 63,035.36 × 12,440.28
  4. Step 4: Simplify right side
    42,029.40x = 784,177,528.30
  5. Step 5: Solve for x
    x = 784,177,528.30/42,029.40
  6. Step 6: Final answer
    x = 18,657.83

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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.