Home / 20,734.24-31,247.36-18,762.52

Finding the Fourth Proportional to 20,734.24, 31,247.36 and 18,762.52

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Solution

The fourth proportional to 20,734.24, 31,247.36 and 18,762.52 is: 28,275.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,734.24 : 31,247.36 = 18,762.52 : x
  2. Step 2: Convert to fraction form
    20,734.24/31,247.36 = 18,762.52/x
  3. Step 3: Cross multiply
    20,734.24x = 31,247.36 × 18,762.52
  4. Step 4: Simplify right side
    20,734.24x = 586,279,216.95
  5. Step 5: Solve for x
    x = 586,279,216.95/20,734.24
  6. Step 6: Final answer
    x = 28,275.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.