Home / 27,995.27-38,633.45-15,420.02

Finding the Fourth Proportional to 27,995.27, 38,633.45 and 15,420.02

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Solution

The fourth proportional to 27,995.27, 38,633.45 and 15,420.02 is: 21,279.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,995.27 : 38,633.45 = 15,420.02 : x
  2. Step 2: Convert to fraction form
    27,995.27/38,633.45 = 15,420.02/x
  3. Step 3: Cross multiply
    27,995.27x = 38,633.45 × 15,420.02
  4. Step 4: Simplify right side
    27,995.27x = 595,728,301.40
  5. Step 5: Solve for x
    x = 595,728,301.40/27,995.27
  6. Step 6: Final answer
    x = 21,279.61

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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.