Home / 15,778.11-21,773.93-8,705.01

Finding the Fourth Proportional to 15,778.11, 21,773.93 and 8,705.01

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Solution

The fourth proportional to 15,778.11, 21,773.93 and 8,705.01 is: 12,012.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,778.11 : 21,773.93 = 8,705.01 : x
  2. Step 2: Convert to fraction form
    15,778.11/21,773.93 = 8,705.01/x
  3. Step 3: Cross multiply
    15,778.11x = 21,773.93 × 8,705.01
  4. Step 4: Simplify right side
    15,778.11x = 189,542,234.86
  5. Step 5: Solve for x
    x = 189,542,234.86/15,778.11
  6. Step 6: Final answer
    x = 12,012.99

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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.