Home / 15,112.16-20,852.31-8,397.61

Finding the Fourth Proportional to 15,112.16, 20,852.31 and 8,397.61

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Solution

The fourth proportional to 15,112.16, 20,852.31 and 8,397.61 is: 11,587.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,112.16 : 20,852.31 = 8,397.61 : x
  2. Step 2: Convert to fraction form
    15,112.16/20,852.31 = 8,397.61/x
  3. Step 3: Cross multiply
    15,112.16x = 20,852.31 × 8,397.61
  4. Step 4: Simplify right side
    15,112.16x = 175,109,546.34
  5. Step 5: Solve for x
    x = 175,109,546.34/15,112.16
  6. Step 6: Final answer
    x = 11,587.33

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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.