Home / 10,205.09-15,310.10-4,278.73

Finding the Fourth Proportional to 10,205.09, 15,310.10 and 4,278.73

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Solution

The fourth proportional to 10,205.09, 15,310.10 and 4,278.73 is: 6,419.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,205.09 : 15,310.10 = 4,278.73 : x
  2. Step 2: Convert to fraction form
    10,205.09/15,310.10 = 4,278.73/x
  3. Step 3: Cross multiply
    10,205.09x = 15,310.10 × 4,278.73
  4. Step 4: Simplify right side
    10,205.09x = 65,507,784.17
  5. Step 5: Solve for x
    x = 65,507,784.17/10,205.09
  6. Step 6: Final answer
    x = 6,419.13

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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.