Home / 28,047.47-42,079.76-16,815.29

Finding the Fourth Proportional to 28,047.47, 42,079.76 and 16,815.29

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Solution

The fourth proportional to 28,047.47, 42,079.76 and 16,815.29 is: 25,228.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,047.47 : 42,079.76 = 16,815.29 : x
  2. Step 2: Convert to fraction form
    28,047.47/42,079.76 = 16,815.29/x
  3. Step 3: Cross multiply
    28,047.47x = 42,079.76 × 16,815.29
  4. Step 4: Simplify right side
    28,047.47x = 707,583,073.06
  5. Step 5: Solve for x
    x = 707,583,073.06/28,047.47
  6. Step 6: Final answer
    x = 25,228.06

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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.