Home / 15,540.12-21,445.56-8,466.66

Finding the Fourth Proportional to 15,540.12, 21,445.56 and 8,466.66

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Solution

The fourth proportional to 15,540.12, 21,445.56 and 8,466.66 is: 11,684.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,540.12 : 21,445.56 = 8,466.66 : x
  2. Step 2: Convert to fraction form
    15,540.12/21,445.56 = 8,466.66/x
  3. Step 3: Cross multiply
    15,540.12x = 21,445.56 × 8,466.66
  4. Step 4: Simplify right side
    15,540.12x = 181,572,265.03
  5. Step 5: Solve for x
    x = 181,572,265.03/15,540.12
  6. Step 6: Final answer
    x = 11,684.10

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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.