Home / 38,282.78-57,424.16-11,989.58

Finding the Fourth Proportional to 38,282.78, 57,424.16 and 11,989.58

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Solution

The fourth proportional to 38,282.78, 57,424.16 and 11,989.58 is: 17,984.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,282.78 : 57,424.16 = 11,989.58 : x
  2. Step 2: Convert to fraction form
    38,282.78/57,424.16 = 11,989.58/x
  3. Step 3: Cross multiply
    38,282.78x = 57,424.16 × 11,989.58
  4. Step 4: Simplify right side
    38,282.78x = 688,491,560.25
  5. Step 5: Solve for x
    x = 688,491,560.25/38,282.78
  6. Step 6: Final answer
    x = 17,984.37

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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.