Home / 15,131.52-20,881.60-8,842.64

Finding the Fourth Proportional to 15,131.52, 20,881.60 and 8,842.64

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Solution

The fourth proportional to 15,131.52, 20,881.60 and 8,842.64 is: 12,202.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,131.52 : 20,881.60 = 8,842.64 : x
  2. Step 2: Convert to fraction form
    15,131.52/20,881.60 = 8,842.64/x
  3. Step 3: Cross multiply
    15,131.52x = 20,881.60 × 8,842.64
  4. Step 4: Simplify right side
    15,131.52x = 184,648,471.42
  5. Step 5: Solve for x
    x = 184,648,471.42/15,131.52
  6. Step 6: Final answer
    x = 12,202.90

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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.