Home / 20,294.56-30,365.28-11,979.10

Finding the Fourth Proportional to 20,294.56, 30,365.28 and 11,979.10

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Solution

The fourth proportional to 20,294.56, 30,365.28 and 11,979.10 is: 17,923.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,294.56 : 30,365.28 = 11,979.10 : x
  2. Step 2: Convert to fraction form
    20,294.56/30,365.28 = 11,979.10/x
  3. Step 3: Cross multiply
    20,294.56x = 30,365.28 × 11,979.10
  4. Step 4: Simplify right side
    20,294.56x = 363,748,725.65
  5. Step 5: Solve for x
    x = 363,748,725.65/20,294.56
  6. Step 6: Final answer
    x = 17,923.46

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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.