Home / 27,864.90-38,454.16-15,289.64

Finding the Fourth Proportional to 27,864.90, 38,454.16 and 15,289.64

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Solution

The fourth proportional to 27,864.90, 38,454.16 and 15,289.64 is: 21,100.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,864.90 : 38,454.16 = 15,289.64 : x
  2. Step 2: Convert to fraction form
    27,864.90/38,454.16 = 15,289.64/x
  3. Step 3: Cross multiply
    27,864.90x = 38,454.16 × 15,289.64
  4. Step 4: Simplify right side
    27,864.90x = 587,950,262.90
  5. Step 5: Solve for x
    x = 587,950,262.90/27,864.90
  6. Step 6: Final answer
    x = 21,100.03

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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.