Home / 18,945.10-28,425.84-10,169.76

Finding the Fourth Proportional to 18,945.10, 28,425.84 and 10,169.76

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Solution

The fourth proportional to 18,945.10, 28,425.84 and 10,169.76 is: 15,259.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,945.10 : 28,425.84 = 10,169.76 : x
  2. Step 2: Convert to fraction form
    18,945.10/28,425.84 = 10,169.76/x
  3. Step 3: Cross multiply
    18,945.10x = 28,425.84 × 10,169.76
  4. Step 4: Simplify right side
    18,945.10x = 289,083,970.60
  5. Step 5: Solve for x
    x = 289,083,970.60/18,945.10
  6. Step 6: Final answer
    x = 15,259.04

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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.