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Finding the Fourth Proportional to 9,911.16, 14,881.32 and 4,079.16

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Solution

The fourth proportional to 9,911.16, 14,881.32 and 4,079.16 is: 6,124.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,911.16 : 14,881.32 = 4,079.16 : x
  2. Step 2: Convert to fraction form
    9,911.16/14,881.32 = 4,079.16/x
  3. Step 3: Cross multiply
    9,911.16x = 14,881.32 × 4,079.16
  4. Step 4: Simplify right side
    9,911.16x = 60,703,285.29
  5. Step 5: Solve for x
    x = 60,703,285.29/9,911.16
  6. Step 6: Final answer
    x = 6,124.74

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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.