Home / 15,418.32-21,278.19-8,701.48

Finding the Fourth Proportional to 15,418.32, 21,278.19 and 8,701.48

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Solution

The fourth proportional to 15,418.32, 21,278.19 and 8,701.48 is: 12,008.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,418.32 : 21,278.19 = 8,701.48 : x
  2. Step 2: Convert to fraction form
    15,418.32/21,278.19 = 8,701.48/x
  3. Step 3: Cross multiply
    15,418.32x = 21,278.19 × 8,701.48
  4. Step 4: Simplify right side
    15,418.32x = 185,151,744.72
  5. Step 5: Solve for x
    x = 185,151,744.72/15,418.32
  6. Step 6: Final answer
    x = 12,008.56

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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.