Home / 21,065.52-31,608.04-9,217.73

Finding the Fourth Proportional to 21,065.52, 31,608.04 and 9,217.73

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Solution

The fourth proportional to 21,065.52, 31,608.04 and 9,217.73 is: 13,830.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,065.52 : 31,608.04 = 9,217.73 : x
  2. Step 2: Convert to fraction form
    21,065.52/31,608.04 = 9,217.73/x
  3. Step 3: Cross multiply
    21,065.52x = 31,608.04 × 9,217.73
  4. Step 4: Simplify right side
    21,065.52x = 291,354,378.55
  5. Step 5: Solve for x
    x = 291,354,378.55/21,065.52
  6. Step 6: Final answer
    x = 13,830.87

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1.5x scale

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.