Home / 19,740.72-27,241.36-10,787.80

Finding the Fourth Proportional to 19,740.72, 27,241.36 and 10,787.80

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Solution

The fourth proportional to 19,740.72, 27,241.36 and 10,787.80 is: 14,886.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,740.72 : 27,241.36 = 10,787.80 : x
  2. Step 2: Convert to fraction form
    19,740.72/27,241.36 = 10,787.80/x
  3. Step 3: Cross multiply
    19,740.72x = 27,241.36 × 10,787.80
  4. Step 4: Simplify right side
    19,740.72x = 293,874,343.41
  5. Step 5: Solve for x
    x = 293,874,343.41/19,740.72
  6. Step 6: Final answer
    x = 14,886.71

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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.