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Finding the Fourth Proportional to 28,216.22, 42,323.86 and 6,869.16

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Solution

The fourth proportional to 28,216.22, 42,323.86 and 6,869.16 is: 10,303.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,216.22 : 42,323.86 = 6,869.16 : x
  2. Step 2: Convert to fraction form
    28,216.22/42,323.86 = 6,869.16/x
  3. Step 3: Cross multiply
    28,216.22x = 42,323.86 × 6,869.16
  4. Step 4: Simplify right side
    28,216.22x = 290,729,366.16
  5. Step 5: Solve for x
    x = 290,729,366.16/28,216.22
  6. Step 6: Final answer
    x = 10,303.63

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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.