Home / 20,773.48-31,142.78-9,077.80

Finding the Fourth Proportional to 20,773.48, 31,142.78 and 9,077.80

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Solution

The fourth proportional to 20,773.48, 31,142.78 and 9,077.80 is: 13,609.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,773.48 : 31,142.78 = 9,077.80 : x
  2. Step 2: Convert to fraction form
    20,773.48/31,142.78 = 9,077.80/x
  3. Step 3: Cross multiply
    20,773.48x = 31,142.78 × 9,077.80
  4. Step 4: Simplify right side
    20,773.48x = 282,707,928.28
  5. Step 5: Solve for x
    x = 282,707,928.28/20,773.48
  6. Step 6: Final answer
    x = 13,609.08

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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.