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Finding the Fourth Proportional to 27,963, 38,589.06 and 15,387.96

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Solution

The fourth proportional to 27,963, 38,589.06 and 15,387.96 is: 21,235.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,963 : 38,589.06 = 15,387.96 : x
  2. Step 2: Convert to fraction form
    27,963/38,589.06 = 15,387.96/x
  3. Step 3: Cross multiply
    27,963x = 38,589.06 × 15,387.96
  4. Step 4: Simplify right side
    27,963x = 593,806,911.72
  5. Step 5: Solve for x
    x = 593,806,911.72/27,963
  6. Step 6: Final answer
    x = 21,235.45

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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.