Home / 21,236.18-29,308.66-11,807.78

Finding the Fourth Proportional to 21,236.18, 29,308.66 and 11,807.78

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Solution

The fourth proportional to 21,236.18, 29,308.66 and 11,807.78 is: 16,296.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,236.18 : 29,308.66 = 11,807.78 : x
  2. Step 2: Convert to fraction form
    21,236.18/29,308.66 = 11,807.78/x
  3. Step 3: Cross multiply
    21,236.18x = 29,308.66 × 11,807.78
  4. Step 4: Simplify right side
    21,236.18x = 346,070,209.37
  5. Step 5: Solve for x
    x = 346,070,209.37/21,236.18
  6. Step 6: Final answer
    x = 16,296.26

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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.