Home / 15,180.32-20,937.01-9,876.85

Finding the Fourth Proportional to 15,180.32, 20,937.01 and 9,876.85

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Solution

The fourth proportional to 15,180.32, 20,937.01 and 9,876.85 is: 13,622.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,180.32 : 20,937.01 = 9,876.85 : x
  2. Step 2: Convert to fraction form
    15,180.32/20,937.01 = 9,876.85/x
  3. Step 3: Cross multiply
    15,180.32x = 20,937.01 × 9,876.85
  4. Step 4: Simplify right side
    15,180.32x = 206,791,707.22
  5. Step 5: Solve for x
    x = 206,791,707.22/15,180.32
  6. Step 6: Final answer
    x = 13,622.35

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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.