Home / 20,868.27-28,797.90-11,307.93

Finding the Fourth Proportional to 20,868.27, 28,797.90 and 11,307.93

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Solution

The fourth proportional to 20,868.27, 28,797.90 and 11,307.93 is: 15,604.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,868.27 : 28,797.90 = 11,307.93 : x
  2. Step 2: Convert to fraction form
    20,868.27/28,797.90 = 11,307.93/x
  3. Step 3: Cross multiply
    20,868.27x = 28,797.90 × 11,307.93
  4. Step 4: Simplify right side
    20,868.27x = 325,644,663.35
  5. Step 5: Solve for x
    x = 325,644,663.35/20,868.27
  6. Step 6: Final answer
    x = 15,604.77

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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.