Home / 20,278.14-30,411.73-7,123.33

Finding the Fourth Proportional to 20,278.14, 30,411.73 and 7,123.33

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Solution

The fourth proportional to 20,278.14, 30,411.73 and 7,123.33 is: 10,683.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,278.14 : 30,411.73 = 7,123.33 : x
  2. Step 2: Convert to fraction form
    20,278.14/30,411.73 = 7,123.33/x
  3. Step 3: Cross multiply
    20,278.14x = 30,411.73 × 7,123.33
  4. Step 4: Simplify right side
    20,278.14x = 216,632,788.66
  5. Step 5: Solve for x
    x = 216,632,788.66/20,278.14
  6. Step 6: Final answer
    x = 10,683.07

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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.