Home / 19,778.68-27,291.71-11,279.45

Finding the Fourth Proportional to 19,778.68, 27,291.71 and 11,279.45

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Solution

The fourth proportional to 19,778.68, 27,291.71 and 11,279.45 is: 15,564.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,778.68 : 27,291.71 = 11,279.45 : x
  2. Step 2: Convert to fraction form
    19,778.68/27,291.71 = 11,279.45/x
  3. Step 3: Cross multiply
    19,778.68x = 27,291.71 × 11,279.45
  4. Step 4: Simplify right side
    19,778.68x = 307,835,543.06
  5. Step 5: Solve for x
    x = 307,835,543.06/19,778.68
  6. Step 6: Final answer
    x = 15,564.01

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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.