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Finding the Fourth Proportional to 9,885.03, 14,830.10 and 8,388.81

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Solution

The fourth proportional to 9,885.03, 14,830.10 and 8,388.81 is: 12,585.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,885.03 : 14,830.10 = 8,388.81 : x
  2. Step 2: Convert to fraction form
    9,885.03/14,830.10 = 8,388.81/x
  3. Step 3: Cross multiply
    9,885.03x = 14,830.10 × 8,388.81
  4. Step 4: Simplify right side
    9,885.03x = 124,406,849.24
  5. Step 5: Solve for x
    x = 124,406,849.24/9,885.03
  6. Step 6: Final answer
    x = 12,585.38

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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.