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Finding the Fourth Proportional to 28,041.76, 42,067.04 and 8,323.36

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Solution

The fourth proportional to 28,041.76, 42,067.04 and 8,323.36 is: 12,486.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,041.76 : 42,067.04 = 8,323.36 : x
  2. Step 2: Convert to fraction form
    28,041.76/42,067.04 = 8,323.36/x
  3. Step 3: Cross multiply
    28,041.76x = 42,067.04 × 8,323.36
  4. Step 4: Simplify right side
    28,041.76x = 350,139,118.05
  5. Step 5: Solve for x
    x = 350,139,118.05/28,041.76
  6. Step 6: Final answer
    x = 12,486.35

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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.