Home / 19,715.69-27,207.28-11,217.62

Finding the Fourth Proportional to 19,715.69, 27,207.28 and 11,217.62

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Solution

The fourth proportional to 19,715.69, 27,207.28 and 11,217.62 is: 15,480.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,715.69 : 27,207.28 = 11,217.62 : x
  2. Step 2: Convert to fraction form
    19,715.69/27,207.28 = 11,217.62/x
  3. Step 3: Cross multiply
    19,715.69x = 27,207.28 × 11,217.62
  4. Step 4: Simplify right side
    19,715.69x = 305,201,010.31
  5. Step 5: Solve for x
    x = 305,201,010.31/19,715.69
  6. Step 6: Final answer
    x = 15,480.11

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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.