Home / 28,225.30-42,344.98-19,921.52

Finding the Fourth Proportional to 28,225.30, 42,344.98 and 19,921.52

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Solution

The fourth proportional to 28,225.30, 42,344.98 and 19,921.52 is: 29,887.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,225.30 : 42,344.98 = 19,921.52 : x
  2. Step 2: Convert to fraction form
    28,225.30/42,344.98 = 19,921.52/x
  3. Step 3: Cross multiply
    28,225.30x = 42,344.98 × 19,921.52
  4. Step 4: Simplify right side
    28,225.30x = 843,576,365.97
  5. Step 5: Solve for x
    x = 843,576,365.97/28,225.30
  6. Step 6: Final answer
    x = 29,887.24

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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.