Home / 20,964.24-31,330.89-19,750.50

Finding the Fourth Proportional to 20,964.24, 31,330.89 and 19,750.50

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Solution

The fourth proportional to 20,964.24, 31,330.89 and 19,750.50 is: 29,516.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,964.24 : 31,330.89 = 19,750.50 : x
  2. Step 2: Convert to fraction form
    20,964.24/31,330.89 = 19,750.50/x
  3. Step 3: Cross multiply
    20,964.24x = 31,330.89 × 19,750.50
  4. Step 4: Simplify right side
    20,964.24x = 618,800,742.95
  5. Step 5: Solve for x
    x = 618,800,742.95/20,964.24
  6. Step 6: Final answer
    x = 29,516.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.