Home / 28,139.04-42,229.32-13,348.02

Finding the Fourth Proportional to 28,139.04, 42,229.32 and 13,348.02

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Solution

The fourth proportional to 28,139.04, 42,229.32 and 13,348.02 is: 20,031.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,139.04 : 42,229.32 = 13,348.02 : x
  2. Step 2: Convert to fraction form
    28,139.04/42,229.32 = 13,348.02/x
  3. Step 3: Cross multiply
    28,139.04x = 42,229.32 × 13,348.02
  4. Step 4: Simplify right side
    28,139.04x = 563,677,807.95
  5. Step 5: Solve for x
    x = 563,677,807.95/28,139.04
  6. Step 6: Final answer
    x = 20,031.88

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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.