Home / 20,776.32-28,671.32-11,344.90

Finding the Fourth Proportional to 20,776.32, 28,671.32 and 11,344.90

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Solution

The fourth proportional to 20,776.32, 28,671.32 and 11,344.90 is: 15,655.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,776.32 : 28,671.32 = 11,344.90 : x
  2. Step 2: Convert to fraction form
    20,776.32/28,671.32 = 11,344.90/x
  3. Step 3: Cross multiply
    20,776.32x = 28,671.32 × 11,344.90
  4. Step 4: Simplify right side
    20,776.32x = 325,273,258.27
  5. Step 5: Solve for x
    x = 325,273,258.27/20,776.32
  6. Step 6: Final answer
    x = 15,655.96

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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.