Home / 20,586.25-28,409.03-11,154.82

Finding the Fourth Proportional to 20,586.25, 28,409.03 and 11,154.82

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Solution

The fourth proportional to 20,586.25, 28,409.03 and 11,154.82 is: 15,393.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,586.25 : 28,409.03 = 11,154.82 : x
  2. Step 2: Convert to fraction form
    20,586.25/28,409.03 = 11,154.82/x
  3. Step 3: Cross multiply
    20,586.25x = 28,409.03 × 11,154.82
  4. Step 4: Simplify right side
    20,586.25x = 316,897,560.25
  5. Step 5: Solve for x
    x = 316,897,560.25/20,586.25
  6. Step 6: Final answer
    x = 15,393.65

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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.