Home / 20,273.65-27,979.02-11,320.96

Finding the Fourth Proportional to 20,273.65, 27,979.02 and 11,320.96

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Solution

The fourth proportional to 20,273.65, 27,979.02 and 11,320.96 is: 15,623.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,273.65 : 27,979.02 = 11,320.96 : x
  2. Step 2: Convert to fraction form
    20,273.65/27,979.02 = 11,320.96/x
  3. Step 3: Cross multiply
    20,273.65x = 27,979.02 × 11,320.96
  4. Step 4: Simplify right side
    20,273.65x = 316,749,366.26
  5. Step 5: Solve for x
    x = 316,749,366.26/20,273.65
  6. Step 6: Final answer
    x = 15,623.70

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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.