Home / 26,187.12-39,317.58-18,787.55

Finding the Fourth Proportional to 26,187.12, 39,317.58 and 18,787.55

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Solution

The fourth proportional to 26,187.12, 39,317.58 and 18,787.55 is: 28,207.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,187.12 : 39,317.58 = 18,787.55 : x
  2. Step 2: Convert to fraction form
    26,187.12/39,317.58 = 18,787.55/x
  3. Step 3: Cross multiply
    26,187.12x = 39,317.58 × 18,787.55
  4. Step 4: Simplify right side
    26,187.12x = 738,680,803.54
  5. Step 5: Solve for x
    x = 738,680,803.54/26,187.12
  6. Step 6: Final answer
    x = 28,207.79

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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.