Home / 25,400.88-38,104.56-7,871.76

Finding the Fourth Proportional to 25,400.88, 38,104.56 and 7,871.76

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Solution

The fourth proportional to 25,400.88, 38,104.56 and 7,871.76 is: 11,808.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,400.88 : 38,104.56 = 7,871.76 : x
  2. Step 2: Convert to fraction form
    25,400.88/38,104.56 = 7,871.76/x
  3. Step 3: Cross multiply
    25,400.88x = 38,104.56 × 7,871.76
  4. Step 4: Simplify right side
    25,400.88x = 299,949,951.23
  5. Step 5: Solve for x
    x = 299,949,951.23/25,400.88
  6. Step 6: Final answer
    x = 11,808.64

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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.