Home / 21,015.33-29,000.75-11,455.30

Finding the Fourth Proportional to 21,015.33, 29,000.75 and 11,455.30

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Solution

The fourth proportional to 21,015.33, 29,000.75 and 11,455.30 is: 15,808.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,015.33 : 29,000.75 = 11,455.30 : x
  2. Step 2: Convert to fraction form
    21,015.33/29,000.75 = 11,455.30/x
  3. Step 3: Cross multiply
    21,015.33x = 29,000.75 × 11,455.30
  4. Step 4: Simplify right side
    21,015.33x = 332,212,291.48
  5. Step 5: Solve for x
    x = 332,212,291.48/21,015.33
  6. Step 6: Final answer
    x = 15,808.09

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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.