Home / 20,950.83-31,419.99-6,908.31

Finding the Fourth Proportional to 20,950.83, 31,419.99 and 6,908.31

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Solution

The fourth proportional to 20,950.83, 31,419.99 and 6,908.31 is: 10,360.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,950.83 : 31,419.99 = 6,908.31 : x
  2. Step 2: Convert to fraction form
    20,950.83/31,419.99 = 6,908.31/x
  3. Step 3: Cross multiply
    20,950.83x = 31,419.99 × 6,908.31
  4. Step 4: Simplify right side
    20,950.83x = 217,059,031.12
  5. Step 5: Solve for x
    x = 217,059,031.12/20,950.83
  6. Step 6: Final answer
    x = 10,360.40

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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.