Home / 15,542.81-21,449.23-8,469.35

Finding the Fourth Proportional to 15,542.81, 21,449.23 and 8,469.35

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Solution

The fourth proportional to 15,542.81, 21,449.23 and 8,469.35 is: 11,687.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,542.81 : 21,449.23 = 8,469.35 : x
  2. Step 2: Convert to fraction form
    15,542.81/21,449.23 = 8,469.35/x
  3. Step 3: Cross multiply
    15,542.81x = 21,449.23 × 8,469.35
  4. Step 4: Simplify right side
    15,542.81x = 181,661,036.10
  5. Step 5: Solve for x
    x = 181,661,036.10/15,542.81
  6. Step 6: Final answer
    x = 11,687.79

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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.