Home / 20,687.76-31,025.44-7,537.05

Finding the Fourth Proportional to 20,687.76, 31,025.44 and 7,537.05

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Solution

The fourth proportional to 20,687.76, 31,025.44 and 7,537.05 is: 11,303.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,687.76 : 31,025.44 = 7,537.05 : x
  2. Step 2: Convert to fraction form
    20,687.76/31,025.44 = 7,537.05/x
  3. Step 3: Cross multiply
    20,687.76x = 31,025.44 × 7,537.05
  4. Step 4: Simplify right side
    20,687.76x = 233,840,292.55
  5. Step 5: Solve for x
    x = 233,840,292.55/20,687.76
  6. Step 6: Final answer
    x = 11,303.32

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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.