Home / 21,778.28-32,626.31-12,867.02

Finding the Fourth Proportional to 21,778.28, 32,626.31 and 12,867.02

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Solution

The fourth proportional to 21,778.28, 32,626.31 and 12,867.02 is: 19,276.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,778.28 : 32,626.31 = 12,867.02 : x
  2. Step 2: Convert to fraction form
    21,778.28/32,626.31 = 12,867.02/x
  3. Step 3: Cross multiply
    21,778.28x = 32,626.31 × 12,867.02
  4. Step 4: Simplify right side
    21,778.28x = 419,803,155.83
  5. Step 5: Solve for x
    x = 419,803,155.83/21,778.28
  6. Step 6: Final answer
    x = 19,276.24

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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.