Home / 19,915.42-27,480.06-11,415.98

Finding the Fourth Proportional to 19,915.42, 27,480.06 and 11,415.98

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Solution

The fourth proportional to 19,915.42, 27,480.06 and 11,415.98 is: 15,752.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,915.42 : 27,480.06 = 11,415.98 : x
  2. Step 2: Convert to fraction form
    19,915.42/27,480.06 = 11,415.98/x
  3. Step 3: Cross multiply
    19,915.42x = 27,480.06 × 11,415.98
  4. Step 4: Simplify right side
    19,915.42x = 313,711,815.36
  5. Step 5: Solve for x
    x = 313,711,815.36/19,915.42
  6. Step 6: Final answer
    x = 15,752.21

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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.