Home / 10,205.04-15,293.16-8,115.78

Finding the Fourth Proportional to 10,205.04, 15,293.16 and 8,115.78

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Solution

The fourth proportional to 10,205.04, 15,293.16 and 8,115.78 is: 12,162.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,205.04 : 15,293.16 = 8,115.78 : x
  2. Step 2: Convert to fraction form
    10,205.04/15,293.16 = 8,115.78/x
  3. Step 3: Cross multiply
    10,205.04x = 15,293.16 × 8,115.78
  4. Step 4: Simplify right side
    10,205.04x = 124,115,922.06
  5. Step 5: Solve for x
    x = 124,115,922.06/10,205.04
  6. Step 6: Final answer
    x = 12,162.22

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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.