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Finding the Fourth Proportional to 17,312.15, 23,890.79 and 9,354.38

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Solution

The fourth proportional to 17,312.15, 23,890.79 and 9,354.38 is: 12,909.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,312.15 : 23,890.79 = 9,354.38 : x
  2. Step 2: Convert to fraction form
    17,312.15/23,890.79 = 9,354.38/x
  3. Step 3: Cross multiply
    17,312.15x = 23,890.79 × 9,354.38
  4. Step 4: Simplify right side
    17,312.15x = 223,483,361.93
  5. Step 5: Solve for x
    x = 223,483,361.93/17,312.15
  6. Step 6: Final answer
    x = 12,909.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.