Home / 15,114.11-20,854.26-8,398.35

Finding the Fourth Proportional to 15,114.11, 20,854.26 and 8,398.35

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Solution

The fourth proportional to 15,114.11, 20,854.26 and 8,398.35 is: 11,587.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,114.11 : 20,854.26 = 8,398.35 : x
  2. Step 2: Convert to fraction form
    15,114.11/20,854.26 = 8,398.35/x
  3. Step 3: Cross multiply
    15,114.11x = 20,854.26 × 8,398.35
  4. Step 4: Simplify right side
    15,114.11x = 175,141,374.47
  5. Step 5: Solve for x
    x = 175,141,374.47/15,114.11
  6. Step 6: Final answer
    x = 11,587.94

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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.