Home / 22,771.40-34,155.18-12,879.56

Finding the Fourth Proportional to 22,771.40, 34,155.18 and 12,879.56

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Solution

The fourth proportional to 22,771.40, 34,155.18 and 12,879.56 is: 19,318.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,771.40 : 34,155.18 = 12,879.56 : x
  2. Step 2: Convert to fraction form
    22,771.40/34,155.18 = 12,879.56/x
  3. Step 3: Cross multiply
    22,771.40x = 34,155.18 × 12,879.56
  4. Step 4: Simplify right side
    22,771.40x = 439,903,690.12
  5. Step 5: Solve for x
    x = 439,903,690.12/22,771.40
  6. Step 6: Final answer
    x = 19,318.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.