Home / 13,176.84-19,768.00-5,385.66

Finding the Fourth Proportional to 13,176.84, 19,768.00 and 5,385.66

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Solution

The fourth proportional to 13,176.84, 19,768.00 and 5,385.66 is: 8,079.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,176.84 : 19,768.00 = 5,385.66 : x
  2. Step 2: Convert to fraction form
    13,176.84/19,768.00 = 5,385.66/x
  3. Step 3: Cross multiply
    13,176.84x = 19,768.00 × 5,385.66
  4. Step 4: Simplify right side
    13,176.84x = 106,463,649.38
  5. Step 5: Solve for x
    x = 106,463,649.38/13,176.84
  6. Step 6: Final answer
    x = 8,079.60

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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.