Home / 19,943.05-27,521.59-10,990.87

Finding the Fourth Proportional to 19,943.05, 27,521.59 and 10,990.87

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Solution

The fourth proportional to 19,943.05, 27,521.59 and 10,990.87 is: 15,167.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,943.05 : 27,521.59 = 10,990.87 : x
  2. Step 2: Convert to fraction form
    19,943.05/27,521.59 = 10,990.87/x
  3. Step 3: Cross multiply
    19,943.05x = 27,521.59 × 10,990.87
  4. Step 4: Simplify right side
    19,943.05x = 302,486,217.88
  5. Step 5: Solve for x
    x = 302,486,217.88/19,943.05
  6. Step 6: Final answer
    x = 15,167.50

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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.