Home / 20,679.60-28,541.96-12,294.48

Finding the Fourth Proportional to 20,679.60, 28,541.96 and 12,294.48

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Solution

The fourth proportional to 20,679.60, 28,541.96 and 12,294.48 is: 16,968.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,679.60 : 28,541.96 = 12,294.48 : x
  2. Step 2: Convert to fraction form
    20,679.60/28,541.96 = 12,294.48/x
  3. Step 3: Cross multiply
    20,679.60x = 28,541.96 × 12,294.48
  4. Step 4: Simplify right side
    20,679.60x = 350,908,556.38
  5. Step 5: Solve for x
    x = 350,908,556.38/20,679.60
  6. Step 6: Final answer
    x = 16,968.83

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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.