Home / 28,246.12-38,958.03-20,689.70

Finding the Fourth Proportional to 28,246.12, 38,958.03 and 20,689.70

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Solution

The fourth proportional to 28,246.12, 38,958.03 and 20,689.70 is: 28,535.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,246.12 : 38,958.03 = 20,689.70 : x
  2. Step 2: Convert to fraction form
    28,246.12/38,958.03 = 20,689.70/x
  3. Step 3: Cross multiply
    28,246.12x = 38,958.03 × 20,689.70
  4. Step 4: Simplify right side
    28,246.12x = 806,029,758.50
  5. Step 5: Solve for x
    x = 806,029,758.50/28,246.12
  6. Step 6: Final answer
    x = 28,535.95

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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.