Home / 21,156.03-29,195.10-11,724.53

Finding the Fourth Proportional to 21,156.03, 29,195.10 and 11,724.53

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Solution

The fourth proportional to 21,156.03, 29,195.10 and 11,724.53 is: 16,179.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,156.03 : 29,195.10 = 11,724.53 : x
  2. Step 2: Convert to fraction form
    21,156.03/29,195.10 = 11,724.53/x
  3. Step 3: Cross multiply
    21,156.03x = 29,195.10 × 11,724.53
  4. Step 4: Simplify right side
    21,156.03x = 342,298,679.83
  5. Step 5: Solve for x
    x = 342,298,679.83/21,156.03
  6. Step 6: Final answer
    x = 16,179.72

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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.