Home / 21,110.24-29,132.52-11,679.68

Finding the Fourth Proportional to 21,110.24, 29,132.52 and 11,679.68

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Solution

The fourth proportional to 21,110.24, 29,132.52 and 11,679.68 is: 16,118.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,110.24 : 29,132.52 = 11,679.68 : x
  2. Step 2: Convert to fraction form
    21,110.24/29,132.52 = 11,679.68/x
  3. Step 3: Cross multiply
    21,110.24x = 29,132.52 × 11,679.68
  4. Step 4: Simplify right side
    21,110.24x = 340,258,511.19
  5. Step 5: Solve for x
    x = 340,258,511.19/21,110.24
  6. Step 6: Final answer
    x = 16,118.17

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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.