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Finding the Fourth Proportional to 27,657.40, 38,169.48 and 15,724.48

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Solution

The fourth proportional to 27,657.40, 38,169.48 and 15,724.48 is: 21,701.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,657.40 : 38,169.48 = 15,724.48 : x
  2. Step 2: Convert to fraction form
    27,657.40/38,169.48 = 15,724.48/x
  3. Step 3: Cross multiply
    27,657.40x = 38,169.48 × 15,724.48
  4. Step 4: Simplify right side
    27,657.40x = 600,195,224.87
  5. Step 5: Solve for x
    x = 600,195,224.87/27,657.40
  6. Step 6: Final answer
    x = 21,701.07

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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.