Home / 42,140.64-63,162-15,828.60

Finding the Fourth Proportional to 42,140.64, 63,162 and 15,828.60

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Solution

The fourth proportional to 42,140.64, 63,162 and 15,828.60 is: 23,724.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,140.64 : 63,162 = 15,828.60 : x
  2. Step 2: Convert to fraction form
    42,140.64/63,162 = 15,828.60/x
  3. Step 3: Cross multiply
    42,140.64x = 63,162 × 15,828.60
  4. Step 4: Simplify right side
    42,140.64x = 999,766,033.20
  5. Step 5: Solve for x
    x = 999,766,033.20/42,140.64
  6. Step 6: Final answer
    x = 23,724.51

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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.