Home / 19,929.78-27,499.06-15,148.45

Finding the Fourth Proportional to 19,929.78, 27,499.06 and 15,148.45

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Solution

The fourth proportional to 19,929.78, 27,499.06 and 15,148.45 is: 20,901.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,929.78 : 27,499.06 = 15,148.45 : x
  2. Step 2: Convert to fraction form
    19,929.78/27,499.06 = 15,148.45/x
  3. Step 3: Cross multiply
    19,929.78x = 27,499.06 × 15,148.45
  4. Step 4: Simplify right side
    19,929.78x = 416,568,028.84
  5. Step 5: Solve for x
    x = 416,568,028.84/19,929.78
  6. Step 6: Final answer
    x = 20,901.79

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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.