Home / 20,575.27-28,393.53-11,500.84

Finding the Fourth Proportional to 20,575.27, 28,393.53 and 11,500.84

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Solution

The fourth proportional to 20,575.27, 28,393.53 and 11,500.84 is: 15,870.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,575.27 : 28,393.53 = 11,500.84 : x
  2. Step 2: Convert to fraction form
    20,575.27/28,393.53 = 11,500.84/x
  3. Step 3: Cross multiply
    20,575.27x = 28,393.53 × 11,500.84
  4. Step 4: Simplify right side
    20,575.27x = 326,549,445.57
  5. Step 5: Solve for x
    x = 326,549,445.57/20,575.27
  6. Step 6: Final answer
    x = 15,870.97

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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.