Home / 15,861.08-21,888.28-9,146.61

Finding the Fourth Proportional to 15,861.08, 21,888.28 and 9,146.61

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Solution

The fourth proportional to 15,861.08, 21,888.28 and 9,146.61 is: 12,622.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,861.08 : 21,888.28 = 9,146.61 : x
  2. Step 2: Convert to fraction form
    15,861.08/21,888.28 = 9,146.61/x
  3. Step 3: Cross multiply
    15,861.08x = 21,888.28 × 9,146.61
  4. Step 4: Simplify right side
    15,861.08x = 200,203,560.73
  5. Step 5: Solve for x
    x = 200,203,560.73/15,861.08
  6. Step 6: Final answer
    x = 12,622.32

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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.