Home / 25,757.47-38,641.74-7,987.75

Finding the Fourth Proportional to 25,757.47, 38,641.74 and 7,987.75

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Solution

The fourth proportional to 25,757.47, 38,641.74 and 7,987.75 is: 11,983.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,757.47 : 38,641.74 = 7,987.75 : x
  2. Step 2: Convert to fraction form
    25,757.47/38,641.74 = 7,987.75/x
  3. Step 3: Cross multiply
    25,757.47x = 38,641.74 × 7,987.75
  4. Step 4: Simplify right side
    25,757.47x = 308,660,558.69
  5. Step 5: Solve for x
    x = 308,660,558.69/25,757.47
  6. Step 6: Final answer
    x = 11,983.34

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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.