Home / 15,188.10-20,954.61-8,472.48

Finding the Fourth Proportional to 15,188.10, 20,954.61 and 8,472.48

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Solution

The fourth proportional to 15,188.10, 20,954.61 and 8,472.48 is: 11,689.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,188.10 : 20,954.61 = 8,472.48 : x
  2. Step 2: Convert to fraction form
    15,188.10/20,954.61 = 8,472.48/x
  3. Step 3: Cross multiply
    15,188.10x = 20,954.61 × 8,472.48
  4. Step 4: Simplify right side
    15,188.10x = 177,537,514.13
  5. Step 5: Solve for x
    x = 177,537,514.13/15,188.10
  6. Step 6: Final answer
    x = 11,689.25

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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.