Home / 20,695.10-31,025.10-7,539.80

Finding the Fourth Proportional to 20,695.10, 31,025.10 and 7,539.80

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Solution

The fourth proportional to 20,695.10, 31,025.10 and 7,539.80 is: 11,303.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,695.10 : 31,025.10 = 7,539.80 : x
  2. Step 2: Convert to fraction form
    20,695.10/31,025.10 = 7,539.80/x
  3. Step 3: Cross multiply
    20,695.10x = 31,025.10 × 7,539.80
  4. Step 4: Simplify right side
    20,695.10x = 233,923,048.98
  5. Step 5: Solve for x
    x = 233,923,048.98/20,695.10
  6. Step 6: Final answer
    x = 11,303.31

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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.