Home / 28,180.98-38,890.19-15,433.92

Finding the Fourth Proportional to 28,180.98, 38,890.19 and 15,433.92

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Solution

The fourth proportional to 28,180.98, 38,890.19 and 15,433.92 is: 21,299.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,180.98 : 38,890.19 = 15,433.92 : x
  2. Step 2: Convert to fraction form
    28,180.98/38,890.19 = 15,433.92/x
  3. Step 3: Cross multiply
    28,180.98x = 38,890.19 × 15,433.92
  4. Step 4: Simplify right side
    28,180.98x = 600,228,119.83
  5. Step 5: Solve for x
    x = 600,228,119.83/28,180.98
  6. Step 6: Final answer
    x = 21,299.05

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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.