Home / 15,135.60-20,883.74-9,167.16

Finding the Fourth Proportional to 15,135.60, 20,883.74 and 9,167.16

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Solution

The fourth proportional to 15,135.60, 20,883.74 and 9,167.16 is: 12,648.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,135.60 : 20,883.74 = 9,167.16 : x
  2. Step 2: Convert to fraction form
    15,135.60/20,883.74 = 9,167.16/x
  3. Step 3: Cross multiply
    15,135.60x = 20,883.74 × 9,167.16
  4. Step 4: Simplify right side
    15,135.60x = 191,444,540.14
  5. Step 5: Solve for x
    x = 191,444,540.14/15,135.60
  6. Step 6: Final answer
    x = 12,648.63

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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.