Home / 20,958.76-31,444.62-7,117.48

Finding the Fourth Proportional to 20,958.76, 31,444.62 and 7,117.48

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Solution

The fourth proportional to 20,958.76, 31,444.62 and 7,117.48 is: 10,678.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,958.76 : 31,444.62 = 7,117.48 : x
  2. Step 2: Convert to fraction form
    20,958.76/31,444.62 = 7,117.48/x
  3. Step 3: Cross multiply
    20,958.76x = 31,444.62 × 7,117.48
  4. Step 4: Simplify right side
    20,958.76x = 223,806,453.96
  5. Step 5: Solve for x
    x = 223,806,453.96/20,958.76
  6. Step 6: Final answer
    x = 10,678.42

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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.