Home / 25,920.47-38,881.42-7,200.56

Finding the Fourth Proportional to 25,920.47, 38,881.42 and 7,200.56

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Solution

The fourth proportional to 25,920.47, 38,881.42 and 7,200.56 is: 10,801.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,920.47 : 38,881.42 = 7,200.56 : x
  2. Step 2: Convert to fraction form
    25,920.47/38,881.42 = 7,200.56/x
  3. Step 3: Cross multiply
    25,920.47x = 38,881.42 × 7,200.56
  4. Step 4: Simplify right side
    25,920.47x = 279,968,076.80
  5. Step 5: Solve for x
    x = 279,968,076.80/25,920.47
  6. Step 6: Final answer
    x = 10,801.04

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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.