Home / 20,350.16-30,536.78-10,990.06

Finding the Fourth Proportional to 20,350.16, 30,536.78 and 10,990.06

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Solution

The fourth proportional to 20,350.16, 30,536.78 and 10,990.06 is: 16,491.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,350.16 : 30,536.78 = 10,990.06 : x
  2. Step 2: Convert to fraction form
    20,350.16/30,536.78 = 10,990.06/x
  3. Step 3: Cross multiply
    20,350.16x = 30,536.78 × 10,990.06
  4. Step 4: Simplify right side
    20,350.16x = 335,601,044.41
  5. Step 5: Solve for x
    x = 335,601,044.41/20,350.16
  6. Step 6: Final answer
    x = 16,491.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.