Home / 38,272.78-57,435.28-13,312.58

Finding the Fourth Proportional to 38,272.78, 57,435.28 and 13,312.58

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Solution

The fourth proportional to 38,272.78, 57,435.28 and 13,312.58 is: 19,977.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,272.78 : 57,435.28 = 13,312.58 : x
  2. Step 2: Convert to fraction form
    38,272.78/57,435.28 = 13,312.58/x
  3. Step 3: Cross multiply
    38,272.78x = 57,435.28 × 13,312.58
  4. Step 4: Simplify right side
    38,272.78x = 764,611,472.65
  5. Step 5: Solve for x
    x = 764,611,472.65/38,272.78
  6. Step 6: Final answer
    x = 19,977.95

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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.