Home / 20,983.28-31,475.68-6,943.66

Finding the Fourth Proportional to 20,983.28, 31,475.68 and 6,943.66

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Solution

The fourth proportional to 20,983.28, 31,475.68 and 6,943.66 is: 10,415.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,983.28 : 31,475.68 = 6,943.66 : x
  2. Step 2: Convert to fraction form
    20,983.28/31,475.68 = 6,943.66/x
  3. Step 3: Cross multiply
    20,983.28x = 31,475.68 × 6,943.66
  4. Step 4: Simplify right side
    20,983.28x = 218,556,420.19
  5. Step 5: Solve for x
    x = 218,556,420.19/20,983.28
  6. Step 6: Final answer
    x = 10,415.74

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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.