Home / 12,435.12-17,138.64-11,061

Finding the Fourth Proportional to 12,435.12, 17,138.64 and 11,061

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Solution

The fourth proportional to 12,435.12, 17,138.64 and 11,061 is: 15,244.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,435.12 : 17,138.64 = 11,061 : x
  2. Step 2: Convert to fraction form
    12,435.12/17,138.64 = 11,061/x
  3. Step 3: Cross multiply
    12,435.12x = 17,138.64 × 11,061
  4. Step 4: Simplify right side
    12,435.12x = 189,570,497.04
  5. Step 5: Solve for x
    x = 189,570,497.04/12,435.12
  6. Step 6: Final answer
    x = 15,244.77

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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.