Home / 15,128.46-22,689-4,740.20

Finding the Fourth Proportional to 15,128.46, 22,689 and 4,740.20

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Solution

The fourth proportional to 15,128.46, 22,689 and 4,740.20 is: 7,109.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,128.46 : 22,689 = 4,740.20 : x
  2. Step 2: Convert to fraction form
    15,128.46/22,689 = 4,740.20/x
  3. Step 3: Cross multiply
    15,128.46x = 22,689 × 4,740.20
  4. Step 4: Simplify right side
    15,128.46x = 107,550,397.80
  5. Step 5: Solve for x
    x = 107,550,397.80/15,128.46
  6. Step 6: Final answer
    x = 7,109.14

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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.