Home / 20,758.48-31,120.32-9,062.80

Finding the Fourth Proportional to 20,758.48, 31,120.32 and 9,062.80

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Solution

The fourth proportional to 20,758.48, 31,120.32 and 9,062.80 is: 13,586.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,758.48 : 31,120.32 = 9,062.80 : x
  2. Step 2: Convert to fraction form
    20,758.48/31,120.32 = 9,062.80/x
  3. Step 3: Cross multiply
    20,758.48x = 31,120.32 × 9,062.80
  4. Step 4: Simplify right side
    20,758.48x = 282,037,236.10
  5. Step 5: Solve for x
    x = 282,037,236.10/20,758.48
  6. Step 6: Final answer
    x = 13,586.60

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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.