Home / 27,321.96-37,701.52-20,155.78

Finding the Fourth Proportional to 27,321.96, 37,701.52 and 20,155.78

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Solution

The fourth proportional to 27,321.96, 37,701.52 and 20,155.78 is: 27,812.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,321.96 : 37,701.52 = 20,155.78 : x
  2. Step 2: Convert to fraction form
    27,321.96/37,701.52 = 20,155.78/x
  3. Step 3: Cross multiply
    27,321.96x = 37,701.52 × 20,155.78
  4. Step 4: Simplify right side
    27,321.96x = 759,903,542.79
  5. Step 5: Solve for x
    x = 759,903,542.79/27,321.96
  6. Step 6: Final answer
    x = 27,812.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.