Home / 15,535.20-21,439.14-8,462.13

Finding the Fourth Proportional to 15,535.20, 21,439.14 and 8,462.13

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Solution

The fourth proportional to 15,535.20, 21,439.14 and 8,462.13 is: 11,678.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,535.20 : 21,439.14 = 8,462.13 : x
  2. Step 2: Convert to fraction form
    15,535.20/21,439.14 = 8,462.13/x
  3. Step 3: Cross multiply
    15,535.20x = 21,439.14 × 8,462.13
  4. Step 4: Simplify right side
    15,535.20x = 181,420,789.77
  5. Step 5: Solve for x
    x = 181,420,789.77/15,535.20
  6. Step 6: Final answer
    x = 11,678.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.