Home / 21,344.61-29,452.85-11,913.57

Finding the Fourth Proportional to 21,344.61, 29,452.85 and 11,913.57

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Solution

The fourth proportional to 21,344.61, 29,452.85 and 11,913.57 is: 16,439.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,344.61 : 29,452.85 = 11,913.57 : x
  2. Step 2: Convert to fraction form
    21,344.61/29,452.85 = 11,913.57/x
  3. Step 3: Cross multiply
    21,344.61x = 29,452.85 × 11,913.57
  4. Step 4: Simplify right side
    21,344.61x = 350,888,530.61
  5. Step 5: Solve for x
    x = 350,888,530.61/21,344.61
  6. Step 6: Final answer
    x = 16,439.21

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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.