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Finding the Fourth Proportional to 28,040, 42,067.54 and 9,323.06

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Solution

The fourth proportional to 28,040, 42,067.54 and 9,323.06 is: 13,987.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,040 : 42,067.54 = 9,323.06 : x
  2. Step 2: Convert to fraction form
    28,040/42,067.54 = 9,323.06/x
  3. Step 3: Cross multiply
    28,040x = 42,067.54 × 9,323.06
  4. Step 4: Simplify right side
    28,040x = 392,198,199.47
  5. Step 5: Solve for x
    x = 392,198,199.47/28,040
  6. Step 6: Final answer
    x = 13,987.10

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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.