Home / 12,511.72-18,643.25-11,133.16

Finding the Fourth Proportional to 12,511.72, 18,643.25 and 11,133.16

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Solution

The fourth proportional to 12,511.72, 18,643.25 and 11,133.16 is: 16,589.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,511.72 : 18,643.25 = 11,133.16 : x
  2. Step 2: Convert to fraction form
    12,511.72/18,643.25 = 11,133.16/x
  3. Step 3: Cross multiply
    12,511.72x = 18,643.25 × 11,133.16
  4. Step 4: Simplify right side
    12,511.72x = 207,558,285.17
  5. Step 5: Solve for x
    x = 207,558,285.17/12,511.72
  6. Step 6: Final answer
    x = 16,589.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.