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Finding the Fourth Proportional to 38,641.03, 57,965.09 and 11,987.23

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Solution

The fourth proportional to 38,641.03, 57,965.09 and 11,987.23 is: 17,981.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,641.03 : 57,965.09 = 11,987.23 : x
  2. Step 2: Convert to fraction form
    38,641.03/57,965.09 = 11,987.23/x
  3. Step 3: Cross multiply
    38,641.03x = 57,965.09 × 11,987.23
  4. Step 4: Simplify right side
    38,641.03x = 694,840,642.17
  5. Step 5: Solve for x
    x = 694,840,642.17/38,641.03
  6. Step 6: Final answer
    x = 17,981.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.