Home / 20,754.77-31,102.99-15,564.29

Finding the Fourth Proportional to 20,754.77, 31,102.99 and 15,564.29

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Solution

The fourth proportional to 20,754.77, 31,102.99 and 15,564.29 is: 23,324.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,754.77 : 31,102.99 = 15,564.29 : x
  2. Step 2: Convert to fraction form
    20,754.77/31,102.99 = 15,564.29/x
  3. Step 3: Cross multiply
    20,754.77x = 31,102.99 × 15,564.29
  4. Step 4: Simplify right side
    20,754.77x = 484,095,761.80
  5. Step 5: Solve for x
    x = 484,095,761.80/20,754.77
  6. Step 6: Final answer
    x = 23,324.56

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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.