Home / 10,287.48-15,428.04-3,712.83

Finding the Fourth Proportional to 10,287.48, 15,428.04 and 3,712.83

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Solution

The fourth proportional to 10,287.48, 15,428.04 and 3,712.83 is: 5,568.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,287.48 : 15,428.04 = 3,712.83 : x
  2. Step 2: Convert to fraction form
    10,287.48/15,428.04 = 3,712.83/x
  3. Step 3: Cross multiply
    10,287.48x = 15,428.04 × 3,712.83
  4. Step 4: Simplify right side
    10,287.48x = 57,281,689.75
  5. Step 5: Solve for x
    x = 57,281,689.75/10,287.48
  6. Step 6: Final answer
    x = 5,568.10

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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.