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Finding the Fourth Proportional to 28,251.97, 38,994.89 and 19,303.09

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Solution

The fourth proportional to 28,251.97, 38,994.89 and 19,303.09 is: 26,643.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,251.97 : 38,994.89 = 19,303.09 : x
  2. Step 2: Convert to fraction form
    28,251.97/38,994.89 = 19,303.09/x
  3. Step 3: Cross multiply
    28,251.97x = 38,994.89 × 19,303.09
  4. Step 4: Simplify right side
    28,251.97x = 752,721,871.21
  5. Step 5: Solve for x
    x = 752,721,871.21/28,251.97
  6. Step 6: Final answer
    x = 26,643.16

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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.