Home / 21,527.88-29,696.09-13,447.49

Finding the Fourth Proportional to 21,527.88, 29,696.09 and 13,447.49

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Solution

The fourth proportional to 21,527.88, 29,696.09 and 13,447.49 is: 18,549.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,527.88 : 29,696.09 = 13,447.49 : x
  2. Step 2: Convert to fraction form
    21,527.88/29,696.09 = 13,447.49/x
  3. Step 3: Cross multiply
    21,527.88x = 29,696.09 × 13,447.49
  4. Step 4: Simplify right side
    21,527.88x = 399,337,657.60
  5. Step 5: Solve for x
    x = 399,337,657.60/21,527.88
  6. Step 6: Final answer
    x = 18,549.79

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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.