Home / 21,211.66-29,335.52-18,554.45

Finding the Fourth Proportional to 21,211.66, 29,335.52 and 18,554.45

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Solution

The fourth proportional to 21,211.66, 29,335.52 and 18,554.45 is: 25,660.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,211.66 : 29,335.52 = 18,554.45 : x
  2. Step 2: Convert to fraction form
    21,211.66/29,335.52 = 18,554.45/x
  3. Step 3: Cross multiply
    21,211.66x = 29,335.52 × 18,554.45
  4. Step 4: Simplify right side
    21,211.66x = 544,304,346.29
  5. Step 5: Solve for x
    x = 544,304,346.29/21,211.66
  6. Step 6: Final answer
    x = 25,660.63

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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.