Home / 28,427.28-39,245.68-19,711.68

Finding the Fourth Proportional to 28,427.28, 39,245.68 and 19,711.68

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Solution

The fourth proportional to 28,427.28, 39,245.68 and 19,711.68 is: 27,213.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,427.28 : 39,245.68 = 19,711.68 : x
  2. Step 2: Convert to fraction form
    28,427.28/39,245.68 = 19,711.68/x
  3. Step 3: Cross multiply
    28,427.28x = 39,245.68 × 19,711.68
  4. Step 4: Simplify right side
    28,427.28x = 773,598,285.54
  5. Step 5: Solve for x
    x = 773,598,285.54/28,427.28
  6. Step 6: Final answer
    x = 27,213.24

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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.