Home / 19,915.05-27,481.50-11,417.07

Finding the Fourth Proportional to 19,915.05, 27,481.50 and 11,417.07

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Solution

The fourth proportional to 19,915.05, 27,481.50 and 11,417.07 is: 15,754.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,915.05 : 27,481.50 = 11,417.07 : x
  2. Step 2: Convert to fraction form
    19,915.05/27,481.50 = 11,417.07/x
  3. Step 3: Cross multiply
    19,915.05x = 27,481.50 × 11,417.07
  4. Step 4: Simplify right side
    19,915.05x = 313,758,209.21
  5. Step 5: Solve for x
    x = 313,758,209.21/19,915.05
  6. Step 6: Final answer
    x = 15,754.83

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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.