Home / 19,942.32-27,521.60-10,991.76

Finding the Fourth Proportional to 19,942.32, 27,521.60 and 10,991.76

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Solution

The fourth proportional to 19,942.32, 27,521.60 and 10,991.76 is: 15,169.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,942.32 : 27,521.60 = 10,991.76 : x
  2. Step 2: Convert to fraction form
    19,942.32/27,521.60 = 10,991.76/x
  3. Step 3: Cross multiply
    19,942.32x = 27,521.60 × 10,991.76
  4. Step 4: Simplify right side
    19,942.32x = 302,510,822.02
  5. Step 5: Solve for x
    x = 302,510,822.02/19,942.32
  6. Step 6: Final answer
    x = 15,169.29

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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.