Home / 15,219.96-22,830-4,689.90

Finding the Fourth Proportional to 15,219.96, 22,830 and 4,689.90

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Solution

The fourth proportional to 15,219.96, 22,830 and 4,689.90 is: 7,034.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,219.96 : 22,830 = 4,689.90 : x
  2. Step 2: Convert to fraction form
    15,219.96/22,830 = 4,689.90/x
  3. Step 3: Cross multiply
    15,219.96x = 22,830 × 4,689.90
  4. Step 4: Simplify right side
    15,219.96x = 107,070,417.00
  5. Step 5: Solve for x
    x = 107,070,417.00/15,219.96
  6. Step 6: Final answer
    x = 7,034.87

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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.