Home / 21,148.29-29,184.88-11,588.20

Finding the Fourth Proportional to 21,148.29, 29,184.88 and 11,588.20

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Solution

The fourth proportional to 21,148.29, 29,184.88 and 11,588.20 is: 15,991.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,148.29 : 29,184.88 = 11,588.20 : x
  2. Step 2: Convert to fraction form
    21,148.29/29,184.88 = 11,588.20/x
  3. Step 3: Cross multiply
    21,148.29x = 29,184.88 × 11,588.20
  4. Step 4: Simplify right side
    21,148.29x = 338,200,226.42
  5. Step 5: Solve for x
    x = 338,200,226.42/21,148.29
  6. Step 6: Final answer
    x = 15,991.85

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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.