Home / 21,261.40-29,340.03-11,829.76

Finding the Fourth Proportional to 21,261.40, 29,340.03 and 11,829.76

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Solution

The fourth proportional to 21,261.40, 29,340.03 and 11,829.76 is: 16,324.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,261.40 : 29,340.03 = 11,829.76 : x
  2. Step 2: Convert to fraction form
    21,261.40/29,340.03 = 11,829.76/x
  3. Step 3: Cross multiply
    21,261.40x = 29,340.03 × 11,829.76
  4. Step 4: Simplify right side
    21,261.40x = 347,085,513.29
  5. Step 5: Solve for x
    x = 347,085,513.29/21,261.40
  6. Step 6: Final answer
    x = 16,324.68

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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.