Home / 21,344.64-29,452.80-11,911.68

Finding the Fourth Proportional to 21,344.64, 29,452.80 and 11,911.68

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Solution

The fourth proportional to 21,344.64, 29,452.80 and 11,911.68 is: 16,436.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,344.64 : 29,452.80 = 11,911.68 : x
  2. Step 2: Convert to fraction form
    21,344.64/29,452.80 = 11,911.68/x
  3. Step 3: Cross multiply
    21,344.64x = 29,452.80 × 11,911.68
  4. Step 4: Simplify right side
    21,344.64x = 350,832,328.70
  5. Step 5: Solve for x
    x = 350,832,328.70/21,344.64
  6. Step 6: Final answer
    x = 16,436.55

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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.