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Finding the Fourth Proportional to 19,886.74, 27,443.72 and 10,934.40

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Solution

The fourth proportional to 19,886.74, 27,443.72 and 10,934.40 is: 15,089.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,886.74 : 27,443.72 = 10,934.40 : x
  2. Step 2: Convert to fraction form
    19,886.74/27,443.72 = 10,934.40/x
  3. Step 3: Cross multiply
    19,886.74x = 27,443.72 × 10,934.40
  4. Step 4: Simplify right side
    19,886.74x = 300,080,611.97
  5. Step 5: Solve for x
    x = 300,080,611.97/19,886.74
  6. Step 6: Final answer
    x = 15,089.48

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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.