Home / 10,101.75-15,115.58-8,431.74

Finding the Fourth Proportional to 10,101.75, 15,115.58 and 8,431.74

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Solution

The fourth proportional to 10,101.75, 15,115.58 and 8,431.74 is: 12,616.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,101.75 : 15,115.58 = 8,431.74 : x
  2. Step 2: Convert to fraction form
    10,101.75/15,115.58 = 8,431.74/x
  3. Step 3: Cross multiply
    10,101.75x = 15,115.58 × 8,431.74
  4. Step 4: Simplify right side
    10,101.75x = 127,450,598.35
  5. Step 5: Solve for x
    x = 127,450,598.35/10,101.75
  6. Step 6: Final answer
    x = 12,616.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.