Home / 28,086.27-38,758.82-15,510.75

Finding the Fourth Proportional to 28,086.27, 38,758.82 and 15,510.75

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Solution

The fourth proportional to 28,086.27, 38,758.82 and 15,510.75 is: 21,404.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,086.27 : 38,758.82 = 15,510.75 : x
  2. Step 2: Convert to fraction form
    28,086.27/38,758.82 = 15,510.75/x
  3. Step 3: Cross multiply
    28,086.27x = 38,758.82 × 15,510.75
  4. Step 4: Simplify right side
    28,086.27x = 601,178,289.76
  5. Step 5: Solve for x
    x = 601,178,289.76/28,086.27
  6. Step 6: Final answer
    x = 21,404.70

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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.