Home / 38,631.20-57,903.60-21,999.20

Finding the Fourth Proportional to 38,631.20, 57,903.60 and 21,999.20

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Solution

The fourth proportional to 38,631.20, 57,903.60 and 21,999.20 is: 32,974.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,631.20 : 57,903.60 = 21,999.20 : x
  2. Step 2: Convert to fraction form
    38,631.20/57,903.60 = 21,999.20/x
  3. Step 3: Cross multiply
    38,631.20x = 57,903.60 × 21,999.20
  4. Step 4: Simplify right side
    38,631.20x = 1,273,832,877.12
  5. Step 5: Solve for x
    x = 1,273,832,877.12/38,631.20
  6. Step 6: Final answer
    x = 32,974.20

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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.