Home / 28,139.56-42,230.08-13,348.52

Finding the Fourth Proportional to 28,139.56, 42,230.08 and 13,348.52

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Solution

The fourth proportional to 28,139.56, 42,230.08 and 13,348.52 is: 20,032.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,139.56 : 42,230.08 = 13,348.52 : x
  2. Step 2: Convert to fraction form
    28,139.56/42,230.08 = 13,348.52/x
  3. Step 3: Cross multiply
    28,139.56x = 42,230.08 × 13,348.52
  4. Step 4: Simplify right side
    28,139.56x = 563,709,067.48
  5. Step 5: Solve for x
    x = 563,709,067.48/28,139.56
  6. Step 6: Final answer
    x = 20,032.62

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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.