Home / 20,790.04-31,197.36-7,651.64

Finding the Fourth Proportional to 20,790.04, 31,197.36 and 7,651.64

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Solution

The fourth proportional to 20,790.04, 31,197.36 and 7,651.64 is: 11,481.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,790.04 : 31,197.36 = 7,651.64 : x
  2. Step 2: Convert to fraction form
    20,790.04/31,197.36 = 7,651.64/x
  3. Step 3: Cross multiply
    20,790.04x = 31,197.36 × 7,651.64
  4. Step 4: Simplify right side
    20,790.04x = 238,710,967.67
  5. Step 5: Solve for x
    x = 238,710,967.67/20,790.04
  6. Step 6: Final answer
    x = 11,481.99

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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.