Home / 28,446.74-39,234.31-18,238.74

Finding the Fourth Proportional to 28,446.74, 39,234.31 and 18,238.74

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Solution

The fourth proportional to 28,446.74, 39,234.31 and 18,238.74 is: 25,155.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,446.74 : 39,234.31 = 18,238.74 : x
  2. Step 2: Convert to fraction form
    28,446.74/39,234.31 = 18,238.74/x
  3. Step 3: Cross multiply
    28,446.74x = 39,234.31 × 18,238.74
  4. Step 4: Simplify right side
    28,446.74x = 715,584,515.75
  5. Step 5: Solve for x
    x = 715,584,515.75/28,446.74
  6. Step 6: Final answer
    x = 25,155.24

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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.