Home / 21,258.78-29,338.89-11,829.12

Finding the Fourth Proportional to 21,258.78, 29,338.89 and 11,829.12

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Solution

The fourth proportional to 21,258.78, 29,338.89 and 11,829.12 is: 16,325.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,258.78 : 29,338.89 = 11,829.12 : x
  2. Step 2: Convert to fraction form
    21,258.78/29,338.89 = 11,829.12/x
  3. Step 3: Cross multiply
    21,258.78x = 29,338.89 × 11,829.12
  4. Step 4: Simplify right side
    21,258.78x = 347,053,250.48
  5. Step 5: Solve for x
    x = 347,053,250.48/21,258.78
  6. Step 6: Final answer
    x = 16,325.17

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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.