Home / 38,120.96-57,160.56-11,818.40

Finding the Fourth Proportional to 38,120.96, 57,160.56 and 11,818.40

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Solution

The fourth proportional to 38,120.96, 57,160.56 and 11,818.40 is: 17,721.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,120.96 : 57,160.56 = 11,818.40 : x
  2. Step 2: Convert to fraction form
    38,120.96/57,160.56 = 11,818.40/x
  3. Step 3: Cross multiply
    38,120.96x = 57,160.56 × 11,818.40
  4. Step 4: Simplify right side
    38,120.96x = 675,546,362.30
  5. Step 5: Solve for x
    x = 675,546,362.30/38,120.96
  6. Step 6: Final answer
    x = 17,721.13

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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.