Home / 20,782.20-31,192.73-10,264.10

Finding the Fourth Proportional to 20,782.20, 31,192.73 and 10,264.10

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Solution

The fourth proportional to 20,782.20, 31,192.73 and 10,264.10 is: 15,405.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,782.20 : 31,192.73 = 10,264.10 : x
  2. Step 2: Convert to fraction form
    20,782.20/31,192.73 = 10,264.10/x
  3. Step 3: Cross multiply
    20,782.20x = 31,192.73 × 10,264.10
  4. Step 4: Simplify right side
    20,782.20x = 320,165,299.99
  5. Step 5: Solve for x
    x = 320,165,299.99/20,782.20
  6. Step 6: Final answer
    x = 15,405.75

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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.