Home / 11,875.11-16,388.22-6,840.11

Finding the Fourth Proportional to 11,875.11, 16,388.22 and 6,840.11

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Solution

The fourth proportional to 11,875.11, 16,388.22 and 6,840.11 is: 9,439.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,875.11 : 16,388.22 = 6,840.11 : x
  2. Step 2: Convert to fraction form
    11,875.11/16,388.22 = 6,840.11/x
  3. Step 3: Cross multiply
    11,875.11x = 16,388.22 × 6,840.11
  4. Step 4: Simplify right side
    11,875.11x = 112,097,294.13
  5. Step 5: Solve for x
    x = 112,097,294.13/11,875.11
  6. Step 6: Final answer
    x = 9,439.69

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1.5x scale

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.