Home / 21,532.32-29,723.72-20,187.18

Finding the Fourth Proportional to 21,532.32, 29,723.72 and 20,187.18

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Solution

The fourth proportional to 21,532.32, 29,723.72 and 20,187.18 is: 27,866.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,532.32 : 29,723.72 = 20,187.18 : x
  2. Step 2: Convert to fraction form
    21,532.32/29,723.72 = 20,187.18/x
  3. Step 3: Cross multiply
    21,532.32x = 29,723.72 × 20,187.18
  4. Step 4: Simplify right side
    21,532.32x = 600,037,984.97
  5. Step 5: Solve for x
    x = 600,037,984.97/21,532.32
  6. Step 6: Final answer
    x = 27,866.85

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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.