Home / 15,722.09-21,695.15-9,260.70

Finding the Fourth Proportional to 15,722.09, 21,695.15 and 9,260.70

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Solution

The fourth proportional to 15,722.09, 21,695.15 and 9,260.70 is: 12,778.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,722.09 : 21,695.15 = 9,260.70 : x
  2. Step 2: Convert to fraction form
    15,722.09/21,695.15 = 9,260.70/x
  3. Step 3: Cross multiply
    15,722.09x = 21,695.15 × 9,260.70
  4. Step 4: Simplify right side
    15,722.09x = 200,912,167.13
  5. Step 5: Solve for x
    x = 200,912,167.13/15,722.09
  6. Step 6: Final answer
    x = 12,778.97

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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.