Home / 15,112.18-20,853.48-8,397.38

Finding the Fourth Proportional to 15,112.18, 20,853.48 and 8,397.38

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Solution

The fourth proportional to 15,112.18, 20,853.48 and 8,397.38 is: 11,587.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,112.18 : 20,853.48 = 8,397.38 : x
  2. Step 2: Convert to fraction form
    15,112.18/20,853.48 = 8,397.38/x
  3. Step 3: Cross multiply
    15,112.18x = 20,853.48 × 8,397.38
  4. Step 4: Simplify right side
    15,112.18x = 175,114,679.51
  5. Step 5: Solve for x
    x = 175,114,679.51/15,112.18
  6. Step 6: Final answer
    x = 11,587.65

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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.