Home / 19,705.71-27,223.49-12,915.84

Finding the Fourth Proportional to 19,705.71, 27,223.49 and 12,915.84

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Solution

The fourth proportional to 19,705.71, 27,223.49 and 12,915.84 is: 17,843.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,705.71 : 27,223.49 = 12,915.84 : x
  2. Step 2: Convert to fraction form
    19,705.71/27,223.49 = 12,915.84/x
  3. Step 3: Cross multiply
    19,705.71x = 27,223.49 × 12,915.84
  4. Step 4: Simplify right side
    19,705.71x = 351,614,104.96
  5. Step 5: Solve for x
    x = 351,614,104.96/19,705.71
  6. Step 6: Final answer
    x = 17,843.26

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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.