Home / 19,868.16-29,776.32-8,169.60

Finding the Fourth Proportional to 19,868.16, 29,776.32 and 8,169.60

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Solution

The fourth proportional to 19,868.16, 29,776.32 and 8,169.60 is: 12,243.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,868.16 : 29,776.32 = 8,169.60 : x
  2. Step 2: Convert to fraction form
    19,868.16/29,776.32 = 8,169.60/x
  3. Step 3: Cross multiply
    19,868.16x = 29,776.32 × 8,169.60
  4. Step 4: Simplify right side
    19,868.16x = 243,260,623.87
  5. Step 5: Solve for x
    x = 243,260,623.87/19,868.16
  6. Step 6: Final answer
    x = 12,243.74

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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.