Home / 20,907.40-31,324.56-17,419.81

Finding the Fourth Proportional to 20,907.40, 31,324.56 and 17,419.81

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Solution

The fourth proportional to 20,907.40, 31,324.56 and 17,419.81 is: 26,099.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,907.40 : 31,324.56 = 17,419.81 : x
  2. Step 2: Convert to fraction form
    20,907.40/31,324.56 = 17,419.81/x
  3. Step 3: Cross multiply
    20,907.40x = 31,324.56 × 17,419.81
  4. Step 4: Simplify right side
    20,907.40x = 545,667,883.53
  5. Step 5: Solve for x
    x = 545,667,883.53/20,907.40
  6. Step 6: Final answer
    x = 26,099.27

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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.