Home / 20,983.16-31,480.14-6,191.48

Finding the Fourth Proportional to 20,983.16, 31,480.14 and 6,191.48

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Solution

The fourth proportional to 20,983.16, 31,480.14 and 6,191.48 is: 9,288.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,983.16 : 31,480.14 = 6,191.48 : x
  2. Step 2: Convert to fraction form
    20,983.16/31,480.14 = 6,191.48/x
  3. Step 3: Cross multiply
    20,983.16x = 31,480.14 × 6,191.48
  4. Step 4: Simplify right side
    20,983.16x = 194,908,657.21
  5. Step 5: Solve for x
    x = 194,908,657.21/20,983.16
  6. Step 6: Final answer
    x = 9,288.81

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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.