Home / 28,073.28-42,109.96-7,296.78

Finding the Fourth Proportional to 28,073.28, 42,109.96 and 7,296.78

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Solution

The fourth proportional to 28,073.28, 42,109.96 and 7,296.78 is: 10,945.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,073.28 : 42,109.96 = 7,296.78 : x
  2. Step 2: Convert to fraction form
    28,073.28/42,109.96 = 7,296.78/x
  3. Step 3: Cross multiply
    28,073.28x = 42,109.96 × 7,296.78
  4. Step 4: Simplify right side
    28,073.28x = 307,267,113.93
  5. Step 5: Solve for x
    x = 307,267,113.93/28,073.28
  6. Step 6: Final answer
    x = 10,945.18

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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.