Home / 15,778.56-21,773.80-8,704.92

Finding the Fourth Proportional to 15,778.56, 21,773.80 and 8,704.92

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Solution

The fourth proportional to 15,778.56, 21,773.80 and 8,704.92 is: 12,012.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,778.56 : 21,773.80 = 8,704.92 : x
  2. Step 2: Convert to fraction form
    15,778.56/21,773.80 = 8,704.92/x
  3. Step 3: Cross multiply
    15,778.56x = 21,773.80 × 8,704.92
  4. Step 4: Simplify right side
    15,778.56x = 189,539,187.10
  5. Step 5: Solve for x
    x = 189,539,187.10/15,778.56
  6. Step 6: Final answer
    x = 12,012.45

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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.