Home / 25,748.20-35,532.78-15,138

Finding the Fourth Proportional to 25,748.20, 35,532.78 and 15,138

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Solution

The fourth proportional to 25,748.20, 35,532.78 and 15,138 is: 20,890.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,748.20 : 35,532.78 = 15,138 : x
  2. Step 2: Convert to fraction form
    25,748.20/35,532.78 = 15,138/x
  3. Step 3: Cross multiply
    25,748.20x = 35,532.78 × 15,138
  4. Step 4: Simplify right side
    25,748.20x = 537,895,223.64
  5. Step 5: Solve for x
    x = 537,895,223.64/25,748.20
  6. Step 6: Final answer
    x = 20,890.60

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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.