Home / 15,321.66-21,147.75-9,036.06

Finding the Fourth Proportional to 15,321.66, 21,147.75 and 9,036.06

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Solution

The fourth proportional to 15,321.66, 21,147.75 and 9,036.06 is: 12,472.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,321.66 : 21,147.75 = 9,036.06 : x
  2. Step 2: Convert to fraction form
    15,321.66/21,147.75 = 9,036.06/x
  3. Step 3: Cross multiply
    15,321.66x = 21,147.75 × 9,036.06
  4. Step 4: Simplify right side
    15,321.66x = 191,092,337.87
  5. Step 5: Solve for x
    x = 191,092,337.87/15,321.66
  6. Step 6: Final answer
    x = 12,472.04

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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.