Home / 27,987.85-38,623.92-17,228.72

Finding the Fourth Proportional to 27,987.85, 38,623.92 and 17,228.72

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Solution

The fourth proportional to 27,987.85, 38,623.92 and 17,228.72 is: 23,776.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,987.85 : 38,623.92 = 17,228.72 : x
  2. Step 2: Convert to fraction form
    27,987.85/38,623.92 = 17,228.72/x
  3. Step 3: Cross multiply
    27,987.85x = 38,623.92 × 17,228.72
  4. Step 4: Simplify right side
    27,987.85x = 665,440,864.15
  5. Step 5: Solve for x
    x = 665,440,864.15/27,987.85
  6. Step 6: Final answer
    x = 23,776.06

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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.