Home / 20,926.14-31,389.20-5,343.76

Finding the Fourth Proportional to 20,926.14, 31,389.20 and 5,343.76

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Solution

The fourth proportional to 20,926.14, 31,389.20 and 5,343.76 is: 8,015.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,926.14 : 31,389.20 = 5,343.76 : x
  2. Step 2: Convert to fraction form
    20,926.14/31,389.20 = 5,343.76/x
  3. Step 3: Cross multiply
    20,926.14x = 31,389.20 × 5,343.76
  4. Step 4: Simplify right side
    20,926.14x = 167,736,351.39
  5. Step 5: Solve for x
    x = 167,736,351.39/20,926.14
  6. Step 6: Final answer
    x = 8,015.64

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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.