Home / 15,535.70-21,439.30-8,462.15

Finding the Fourth Proportional to 15,535.70, 21,439.30 and 8,462.15

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Solution

The fourth proportional to 15,535.70, 21,439.30 and 8,462.15 is: 11,677.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,535.70 : 21,439.30 = 8,462.15 : x
  2. Step 2: Convert to fraction form
    15,535.70/21,439.30 = 8,462.15/x
  3. Step 3: Cross multiply
    15,535.70x = 21,439.30 × 8,462.15
  4. Step 4: Simplify right side
    15,535.70x = 181,422,604.94
  5. Step 5: Solve for x
    x = 181,422,604.94/15,535.70
  6. Step 6: Final answer
    x = 11,677.79

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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.