Home / 27,987.66-38,610.69-18,415.23

Finding the Fourth Proportional to 27,987.66, 38,610.69 and 18,415.23

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Solution

The fourth proportional to 27,987.66, 38,610.69 and 18,415.23 is: 25,404.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,987.66 : 38,610.69 = 18,415.23 : x
  2. Step 2: Convert to fraction form
    27,987.66/38,610.69 = 18,415.23/x
  3. Step 3: Cross multiply
    27,987.66x = 38,610.69 × 18,415.23
  4. Step 4: Simplify right side
    27,987.66x = 711,024,736.81
  5. Step 5: Solve for x
    x = 711,024,736.81/27,987.66
  6. Step 6: Final answer
    x = 25,404.94

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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.