Home / 10,478.25-15,717.38-2,687.09

Finding the Fourth Proportional to 10,478.25, 15,717.38 and 2,687.09

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Solution

The fourth proportional to 10,478.25, 15,717.38 and 2,687.09 is: 4,030.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,478.25 : 15,717.38 = 2,687.09 : x
  2. Step 2: Convert to fraction form
    10,478.25/15,717.38 = 2,687.09/x
  3. Step 3: Cross multiply
    10,478.25x = 15,717.38 × 2,687.09
  4. Step 4: Simplify right side
    10,478.25x = 42,233,922.60
  5. Step 5: Solve for x
    x = 42,233,922.60/10,478.25
  6. Step 6: Final answer
    x = 4,030.63

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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.