Home / 15,540.32-21,445.63-8,466.75

Finding the Fourth Proportional to 15,540.32, 21,445.63 and 8,466.75

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Solution

The fourth proportional to 15,540.32, 21,445.63 and 8,466.75 is: 11,684.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,540.32 : 21,445.63 = 8,466.75 : x
  2. Step 2: Convert to fraction form
    15,540.32/21,445.63 = 8,466.75/x
  3. Step 3: Cross multiply
    15,540.32x = 21,445.63 × 8,466.75
  4. Step 4: Simplify right side
    15,540.32x = 181,574,766.64
  5. Step 5: Solve for x
    x = 181,574,766.64/15,540.32
  6. Step 6: Final answer
    x = 11,684.11

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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.