Home / 19,864.90-27,419.07-11,371.78

Finding the Fourth Proportional to 19,864.90, 27,419.07 and 11,371.78

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Solution

The fourth proportional to 19,864.90, 27,419.07 and 11,371.78 is: 15,696.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,864.90 : 27,419.07 = 11,371.78 : x
  2. Step 2: Convert to fraction form
    19,864.90/27,419.07 = 11,371.78/x
  3. Step 3: Cross multiply
    19,864.90x = 27,419.07 × 11,371.78
  4. Step 4: Simplify right side
    19,864.90x = 311,803,631.84
  5. Step 5: Solve for x
    x = 311,803,631.84/19,864.90
  6. Step 6: Final answer
    x = 15,696.21

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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.