Home / 20,972.13-31,466.84-15,453.33

Finding the Fourth Proportional to 20,972.13, 31,466.84 and 15,453.33

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Solution

The fourth proportional to 20,972.13, 31,466.84 and 15,453.33 is: 23,186.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,972.13 : 31,466.84 = 15,453.33 : x
  2. Step 2: Convert to fraction form
    20,972.13/31,466.84 = 15,453.33/x
  3. Step 3: Cross multiply
    20,972.13x = 31,466.84 × 15,453.33
  4. Step 4: Simplify right side
    20,972.13x = 486,267,385.31
  5. Step 5: Solve for x
    x = 486,267,385.31/20,972.13
  6. Step 6: Final answer
    x = 23,186.36

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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.