Home / 27,987.38-38,592.99-21,615.01

Finding the Fourth Proportional to 27,987.38, 38,592.99 and 21,615.01

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Solution

The fourth proportional to 27,987.38, 38,592.99 and 21,615.01 is: 29,805.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,987.38 : 38,592.99 = 21,615.01 : x
  2. Step 2: Convert to fraction form
    27,987.38/38,592.99 = 21,615.01/x
  3. Step 3: Cross multiply
    27,987.38x = 38,592.99 × 21,615.01
  4. Step 4: Simplify right side
    27,987.38x = 834,187,864.78
  5. Step 5: Solve for x
    x = 834,187,864.78/27,987.38
  6. Step 6: Final answer
    x = 29,805.86

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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.