Home / 20,717.80-31,040.10-20,032.60

Finding the Fourth Proportional to 20,717.80, 31,040.10 and 20,032.60

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Solution

The fourth proportional to 20,717.80, 31,040.10 and 20,032.60 is: 30,013.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,717.80 : 31,040.10 = 20,032.60 : x
  2. Step 2: Convert to fraction form
    20,717.80/31,040.10 = 20,032.60/x
  3. Step 3: Cross multiply
    20,717.80x = 31,040.10 × 20,032.60
  4. Step 4: Simplify right side
    20,717.80x = 621,813,907.26
  5. Step 5: Solve for x
    x = 621,813,907.26/20,717.80
  6. Step 6: Final answer
    x = 30,013.51

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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.