Home / 10,642.32-15,948.68-5,437.20

Finding the Fourth Proportional to 10,642.32, 15,948.68 and 5,437.20

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Solution

The fourth proportional to 10,642.32, 15,948.68 and 5,437.20 is: 8,148.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,642.32 : 15,948.68 = 5,437.20 : x
  2. Step 2: Convert to fraction form
    10,642.32/15,948.68 = 5,437.20/x
  3. Step 3: Cross multiply
    10,642.32x = 15,948.68 × 5,437.20
  4. Step 4: Simplify right side
    10,642.32x = 86,716,162.90
  5. Step 5: Solve for x
    x = 86,716,162.90/10,642.32
  6. Step 6: Final answer
    x = 8,148.24

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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.