Home / 19,678.35-27,156.66-11,180.19

Finding the Fourth Proportional to 19,678.35, 27,156.66 and 11,180.19

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Solution

The fourth proportional to 19,678.35, 27,156.66 and 11,180.19 is: 15,428.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,678.35 : 27,156.66 = 11,180.19 : x
  2. Step 2: Convert to fraction form
    19,678.35/27,156.66 = 11,180.19/x
  3. Step 3: Cross multiply
    19,678.35x = 27,156.66 × 11,180.19
  4. Step 4: Simplify right side
    19,678.35x = 303,616,618.57
  5. Step 5: Solve for x
    x = 303,616,618.57/19,678.35
  6. Step 6: Final answer
    x = 15,428.97

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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.