Home / 28,363.05-39,153.17-20,191.95

Finding the Fourth Proportional to 28,363.05, 39,153.17 and 20,191.95

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Solution

The fourth proportional to 28,363.05, 39,153.17 and 20,191.95 is: 27,873.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,363.05 : 39,153.17 = 20,191.95 : x
  2. Step 2: Convert to fraction form
    28,363.05/39,153.17 = 20,191.95/x
  3. Step 3: Cross multiply
    28,363.05x = 39,153.17 × 20,191.95
  4. Step 4: Simplify right side
    28,363.05x = 790,578,750.02
  5. Step 5: Solve for x
    x = 790,578,750.02/28,363.05
  6. Step 6: Final answer
    x = 27,873.54

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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.