Home / 20,545.21-28,344.78-15,180.58

Finding the Fourth Proportional to 20,545.21, 28,344.78 and 15,180.58

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Solution

The fourth proportional to 20,545.21, 28,344.78 and 15,180.58 is: 20,943.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,545.21 : 28,344.78 = 15,180.58 : x
  2. Step 2: Convert to fraction form
    20,545.21/28,344.78 = 15,180.58/x
  3. Step 3: Cross multiply
    20,545.21x = 28,344.78 × 15,180.58
  4. Step 4: Simplify right side
    20,545.21x = 430,290,200.37
  5. Step 5: Solve for x
    x = 430,290,200.37/20,545.21
  6. Step 6: Final answer
    x = 20,943.58

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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.