Home / 42,449.12-63,672-14,371.28

Finding the Fourth Proportional to 42,449.12, 63,672 and 14,371.28

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Solution

The fourth proportional to 42,449.12, 63,672 and 14,371.28 is: 21,556.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,449.12 : 63,672 = 14,371.28 : x
  2. Step 2: Convert to fraction form
    42,449.12/63,672 = 14,371.28/x
  3. Step 3: Cross multiply
    42,449.12x = 63,672 × 14,371.28
  4. Step 4: Simplify right side
    42,449.12x = 915,048,140.16
  5. Step 5: Solve for x
    x = 915,048,140.16/42,449.12
  6. Step 6: Final answer
    x = 21,556.35

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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.