Home / 21,568.74-29,770.40-16,787.58

Finding the Fourth Proportional to 21,568.74, 29,770.40 and 16,787.58

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Solution

The fourth proportional to 21,568.74, 29,770.40 and 16,787.58 is: 23,171.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,568.74 : 29,770.40 = 16,787.58 : x
  2. Step 2: Convert to fraction form
    21,568.74/29,770.40 = 16,787.58/x
  3. Step 3: Cross multiply
    21,568.74x = 29,770.40 × 16,787.58
  4. Step 4: Simplify right side
    21,568.74x = 499,773,013.60
  5. Step 5: Solve for x
    x = 499,773,013.60/21,568.74
  6. Step 6: Final answer
    x = 23,171.17

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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.