Home / 19,772.76-27,296.28-11,387.64

Finding the Fourth Proportional to 19,772.76, 27,296.28 and 11,387.64

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Solution

The fourth proportional to 19,772.76, 27,296.28 and 11,387.64 is: 15,720.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,772.76 : 27,296.28 = 11,387.64 : x
  2. Step 2: Convert to fraction form
    19,772.76/27,296.28 = 11,387.64/x
  3. Step 3: Cross multiply
    19,772.76x = 27,296.28 × 11,387.64
  4. Step 4: Simplify right side
    19,772.76x = 310,840,209.98
  5. Step 5: Solve for x
    x = 310,840,209.98/19,772.76
  6. Step 6: Final answer
    x = 15,720.63

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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.