Home / 19,942.81-27,519.95-10,990.28

Finding the Fourth Proportional to 19,942.81, 27,519.95 and 10,990.28

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Solution

The fourth proportional to 19,942.81, 27,519.95 and 10,990.28 is: 15,165.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,942.81 : 27,519.95 = 10,990.28 : x
  2. Step 2: Convert to fraction form
    19,942.81/27,519.95 = 10,990.28/x
  3. Step 3: Cross multiply
    19,942.81x = 27,519.95 × 10,990.28
  4. Step 4: Simplify right side
    19,942.81x = 302,452,052.36
  5. Step 5: Solve for x
    x = 302,452,052.36/19,942.81
  6. Step 6: Final answer
    x = 15,165.97

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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.