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Finding the Fourth Proportional to 11,420.65, 17,117.34 and 5,876.65

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Solution

The fourth proportional to 11,420.65, 17,117.34 and 5,876.65 is: 8,807.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,420.65 : 17,117.34 = 5,876.65 : x
  2. Step 2: Convert to fraction form
    11,420.65/17,117.34 = 5,876.65/x
  3. Step 3: Cross multiply
    11,420.65x = 17,117.34 × 5,876.65
  4. Step 4: Simplify right side
    11,420.65x = 100,592,616.11
  5. Step 5: Solve for x
    x = 100,592,616.11/11,420.65
  6. Step 6: Final answer
    x = 8,807.96

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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.