Home / 19,776.66-29,669.75-8,089.91

Finding the Fourth Proportional to 19,776.66, 29,669.75 and 8,089.91

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Solution

The fourth proportional to 19,776.66, 29,669.75 and 8,089.91 is: 12,136.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,776.66 : 29,669.75 = 8,089.91 : x
  2. Step 2: Convert to fraction form
    19,776.66/29,669.75 = 8,089.91/x
  3. Step 3: Cross multiply
    19,776.66x = 29,669.75 × 8,089.91
  4. Step 4: Simplify right side
    19,776.66x = 240,025,671.28
  5. Step 5: Solve for x
    x = 240,025,671.28/19,776.66
  6. Step 6: Final answer
    x = 12,136.82

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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.