Home / 20,315.27-28,035.68-11,362.58

Finding the Fourth Proportional to 20,315.27, 28,035.68 and 11,362.58

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Solution

The fourth proportional to 20,315.27, 28,035.68 and 11,362.58 is: 15,680.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,315.27 : 28,035.68 = 11,362.58 : x
  2. Step 2: Convert to fraction form
    20,315.27/28,035.68 = 11,362.58/x
  3. Step 3: Cross multiply
    20,315.27x = 28,035.68 × 11,362.58
  4. Step 4: Simplify right side
    20,315.27x = 318,557,656.85
  5. Step 5: Solve for x
    x = 318,557,656.85/20,315.27
  6. Step 6: Final answer
    x = 15,680.70

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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.