Home / 20,948.11-28,908.05-11,388.24

Finding the Fourth Proportional to 20,948.11, 28,908.05 and 11,388.24

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Solution

The fourth proportional to 20,948.11, 28,908.05 and 11,388.24 is: 15,715.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,948.11 : 28,908.05 = 11,388.24 : x
  2. Step 2: Convert to fraction form
    20,948.11/28,908.05 = 11,388.24/x
  3. Step 3: Cross multiply
    20,948.11x = 28,908.05 × 11,388.24
  4. Step 4: Simplify right side
    20,948.11x = 329,211,737.15
  5. Step 5: Solve for x
    x = 329,211,737.15/20,948.11
  6. Step 6: Final answer
    x = 15,715.58

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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.