Home / 12,511.16-18,788.19-11,108.74

Finding the Fourth Proportional to 12,511.16, 18,788.19 and 11,108.74

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Solution

The fourth proportional to 12,511.16, 18,788.19 and 11,108.74 is: 16,682.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,511.16 : 18,788.19 = 11,108.74 : x
  2. Step 2: Convert to fraction form
    12,511.16/18,788.19 = 11,108.74/x
  3. Step 3: Cross multiply
    12,511.16x = 18,788.19 × 11,108.74
  4. Step 4: Simplify right side
    12,511.16x = 208,713,023.84
  5. Step 5: Solve for x
    x = 208,713,023.84/12,511.16
  6. Step 6: Final answer
    x = 16,682.15

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1.5x scale

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.