Home / 19,109.78-26,371.45-11,150.47

Finding the Fourth Proportional to 19,109.78, 26,371.45 and 11,150.47

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Solution

The fourth proportional to 19,109.78, 26,371.45 and 11,150.47 is: 15,387.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,109.78 : 26,371.45 = 11,150.47 : x
  2. Step 2: Convert to fraction form
    19,109.78/26,371.45 = 11,150.47/x
  3. Step 3: Cross multiply
    19,109.78x = 26,371.45 × 11,150.47
  4. Step 4: Simplify right side
    19,109.78x = 294,054,062.08
  5. Step 5: Solve for x
    x = 294,054,062.08/19,109.78
  6. Step 6: Final answer
    x = 15,387.62

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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.