Home / 19,943.39-27,521.87-10,990.86

Finding the Fourth Proportional to 19,943.39, 27,521.87 and 10,990.86

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Solution

The fourth proportional to 19,943.39, 27,521.87 and 10,990.86 is: 15,167.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,943.39 : 27,521.87 = 10,990.86 : x
  2. Step 2: Convert to fraction form
    19,943.39/27,521.87 = 10,990.86/x
  3. Step 3: Cross multiply
    19,943.39x = 27,521.87 × 10,990.86
  4. Step 4: Simplify right side
    19,943.39x = 302,488,965.15
  5. Step 5: Solve for x
    x = 302,488,965.15/19,943.39
  6. Step 6: Final answer
    x = 15,167.38

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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.