Home / 15,069.42-20,791.98-8,778.24

Finding the Fourth Proportional to 15,069.42, 20,791.98 and 8,778.24

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Solution

The fourth proportional to 15,069.42, 20,791.98 and 8,778.24 is: 12,111.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,069.42 : 20,791.98 = 8,778.24 : x
  2. Step 2: Convert to fraction form
    15,069.42/20,791.98 = 8,778.24/x
  3. Step 3: Cross multiply
    15,069.42x = 20,791.98 × 8,778.24
  4. Step 4: Simplify right side
    15,069.42x = 182,516,990.52
  5. Step 5: Solve for x
    x = 182,516,990.52/15,069.42
  6. Step 6: Final answer
    x = 12,111.75

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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.