Home / 28,294.12-39,046.26-15,720.04

Finding the Fourth Proportional to 28,294.12, 39,046.26 and 15,720.04

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Solution

The fourth proportional to 28,294.12, 39,046.26 and 15,720.04 is: 21,693.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,294.12 : 39,046.26 = 15,720.04 : x
  2. Step 2: Convert to fraction form
    28,294.12/39,046.26 = 15,720.04/x
  3. Step 3: Cross multiply
    28,294.12x = 39,046.26 × 15,720.04
  4. Step 4: Simplify right side
    28,294.12x = 613,808,769.05
  5. Step 5: Solve for x
    x = 613,808,769.05/28,294.12
  6. Step 6: Final answer
    x = 21,693.86

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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.