Home / 38,610.60-57,921.42-12,315.64

Finding the Fourth Proportional to 38,610.60, 57,921.42 and 12,315.64

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Solution

The fourth proportional to 38,610.60, 57,921.42 and 12,315.64 is: 18,475.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,610.60 : 57,921.42 = 12,315.64 : x
  2. Step 2: Convert to fraction form
    38,610.60/57,921.42 = 12,315.64/x
  3. Step 3: Cross multiply
    38,610.60x = 57,921.42 × 12,315.64
  4. Step 4: Simplify right side
    38,610.60x = 713,339,357.01
  5. Step 5: Solve for x
    x = 713,339,357.01/38,610.60
  6. Step 6: Final answer
    x = 18,475.22

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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.