Home / 15,727.32-21,703.71-9,439.70

Finding the Fourth Proportional to 15,727.32, 21,703.71 and 9,439.70

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Solution

The fourth proportional to 15,727.32, 21,703.71 and 9,439.70 is: 13,026.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,727.32 : 21,703.71 = 9,439.70 : x
  2. Step 2: Convert to fraction form
    15,727.32/21,703.71 = 9,439.70/x
  3. Step 3: Cross multiply
    15,727.32x = 21,703.71 × 9,439.70
  4. Step 4: Simplify right side
    15,727.32x = 204,876,402.77
  5. Step 5: Solve for x
    x = 204,876,402.77/15,727.32
  6. Step 6: Final answer
    x = 13,026.78

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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.