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Finding the Fourth Proportional to 16,878.65, 25,318.58 and 6,347.71

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Solution

The fourth proportional to 16,878.65, 25,318.58 and 6,347.71 is: 9,521.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,878.65 : 25,318.58 = 6,347.71 : x
  2. Step 2: Convert to fraction form
    16,878.65/25,318.58 = 6,347.71/x
  3. Step 3: Cross multiply
    16,878.65x = 25,318.58 × 6,347.71
  4. Step 4: Simplify right side
    16,878.65x = 160,715,003.45
  5. Step 5: Solve for x
    x = 160,715,003.45/16,878.65
  6. Step 6: Final answer
    x = 9,521.79

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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.