Home / 15,181.32-20,938.39-9,877.85

Finding the Fourth Proportional to 15,181.32, 20,938.39 and 9,877.85

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Solution

The fourth proportional to 15,181.32, 20,938.39 and 9,877.85 is: 13,623.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,181.32 : 20,938.39 = 9,877.85 : x
  2. Step 2: Convert to fraction form
    15,181.32/20,938.39 = 9,877.85/x
  3. Step 3: Cross multiply
    15,181.32x = 20,938.39 × 9,877.85
  4. Step 4: Simplify right side
    15,181.32x = 206,826,275.66
  5. Step 5: Solve for x
    x = 206,826,275.66/15,181.32
  6. Step 6: Final answer
    x = 13,623.73

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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.