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Finding the Fourth Proportional to 9,918.69, 14,881.91 and 4,368.13

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Solution

The fourth proportional to 9,918.69, 14,881.91 and 4,368.13 is: 6,553.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,918.69 : 14,881.91 = 4,368.13 : x
  2. Step 2: Convert to fraction form
    9,918.69/14,881.91 = 4,368.13/x
  3. Step 3: Cross multiply
    9,918.69x = 14,881.91 × 4,368.13
  4. Step 4: Simplify right side
    9,918.69x = 65,006,168.01
  5. Step 5: Solve for x
    x = 65,006,168.01/9,918.69
  6. Step 6: Final answer
    x = 6,553.91

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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.