Home / 27,995.48-38,633.76-15,420.23

Finding the Fourth Proportional to 27,995.48, 38,633.76 and 15,420.23

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Solution

The fourth proportional to 27,995.48, 38,633.76 and 15,420.23 is: 21,279.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,995.48 : 38,633.76 = 15,420.23 : x
  2. Step 2: Convert to fraction form
    27,995.48/38,633.76 = 15,420.23/x
  3. Step 3: Cross multiply
    27,995.48x = 38,633.76 × 15,420.23
  4. Step 4: Simplify right side
    27,995.48x = 595,741,464.96
  5. Step 5: Solve for x
    x = 595,741,464.96/27,995.48
  6. Step 6: Final answer
    x = 21,279.92

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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.