Home / 22,815.20-31,475.25-14,311.55

Finding the Fourth Proportional to 22,815.20, 31,475.25 and 14,311.55

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Solution

The fourth proportional to 22,815.20, 31,475.25 and 14,311.55 is: 19,743.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,815.20 : 31,475.25 = 14,311.55 : x
  2. Step 2: Convert to fraction form
    22,815.20/31,475.25 = 14,311.55/x
  3. Step 3: Cross multiply
    22,815.20x = 31,475.25 × 14,311.55
  4. Step 4: Simplify right side
    22,815.20x = 450,459,692.83
  5. Step 5: Solve for x
    x = 450,459,692.83/22,815.20
  6. Step 6: Final answer
    x = 19,743.84

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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.