Home / 21,785.76-32,659.20-11,378.88

Finding the Fourth Proportional to 21,785.76, 32,659.20 and 11,378.88

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Solution

The fourth proportional to 21,785.76, 32,659.20 and 11,378.88 is: 17,058.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,785.76 : 32,659.20 = 11,378.88 : x
  2. Step 2: Convert to fraction form
    21,785.76/32,659.20 = 11,378.88/x
  3. Step 3: Cross multiply
    21,785.76x = 32,659.20 × 11,378.88
  4. Step 4: Simplify right side
    21,785.76x = 371,625,117.70
  5. Step 5: Solve for x
    x = 371,625,117.70/21,785.76
  6. Step 6: Final answer
    x = 17,058.17

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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.