Home / 20,867.64-28,797.03-11,436.21

Finding the Fourth Proportional to 20,867.64, 28,797.03 and 11,436.21

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Solution

The fourth proportional to 20,867.64, 28,797.03 and 11,436.21 is: 15,781.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,867.64 : 28,797.03 = 11,436.21 : x
  2. Step 2: Convert to fraction form
    20,867.64/28,797.03 = 11,436.21/x
  3. Step 3: Cross multiply
    20,867.64x = 28,797.03 × 11,436.21
  4. Step 4: Simplify right side
    20,867.64x = 329,328,882.46
  5. Step 5: Solve for x
    x = 329,328,882.46/20,867.64
  6. Step 6: Final answer
    x = 15,781.80

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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.