Home / 21,334.49-29,439.55-11,903.66

Finding the Fourth Proportional to 21,334.49, 29,439.55 and 11,903.66

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Solution

The fourth proportional to 21,334.49, 29,439.55 and 11,903.66 is: 16,425.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,334.49 : 29,439.55 = 11,903.66 : x
  2. Step 2: Convert to fraction form
    21,334.49/29,439.55 = 11,903.66/x
  3. Step 3: Cross multiply
    21,334.49x = 29,439.55 × 11,903.66
  4. Step 4: Simplify right side
    21,334.49x = 350,438,393.75
  5. Step 5: Solve for x
    x = 350,438,393.75/21,334.49
  6. Step 6: Final answer
    x = 16,425.91

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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.