Home / 20,697.77-31,047.23-6,659.21

Finding the Fourth Proportional to 20,697.77, 31,047.23 and 6,659.21

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Solution

The fourth proportional to 20,697.77, 31,047.23 and 6,659.21 is: 9,989.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,697.77 : 31,047.23 = 6,659.21 : x
  2. Step 2: Convert to fraction form
    20,697.77/31,047.23 = 6,659.21/x
  3. Step 3: Cross multiply
    20,697.77x = 31,047.23 × 6,659.21
  4. Step 4: Simplify right side
    20,697.77x = 206,750,118.75
  5. Step 5: Solve for x
    x = 206,750,118.75/20,697.77
  6. Step 6: Final answer
    x = 9,989.00

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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.