Home / 10,134.75-15,128.78-8,756.94

Finding the Fourth Proportional to 10,134.75, 15,128.78 and 8,756.94

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Solution

The fourth proportional to 10,134.75, 15,128.78 and 8,756.94 is: 13,072.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,134.75 : 15,128.78 = 8,756.94 : x
  2. Step 2: Convert to fraction form
    10,134.75/15,128.78 = 8,756.94/x
  3. Step 3: Cross multiply
    10,134.75x = 15,128.78 × 8,756.94
  4. Step 4: Simplify right side
    10,134.75x = 132,481,774.95
  5. Step 5: Solve for x
    x = 132,481,774.95/10,134.75
  6. Step 6: Final answer
    x = 13,072.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.