Home / 20,672.45-31,011.56-6,629.17

Finding the Fourth Proportional to 20,672.45, 31,011.56 and 6,629.17

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Solution

The fourth proportional to 20,672.45, 31,011.56 and 6,629.17 is: 9,944.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,672.45 : 31,011.56 = 6,629.17 : x
  2. Step 2: Convert to fraction form
    20,672.45/31,011.56 = 6,629.17/x
  3. Step 3: Cross multiply
    20,672.45x = 31,011.56 × 6,629.17
  4. Step 4: Simplify right side
    20,672.45x = 205,580,870.06
  5. Step 5: Solve for x
    x = 205,580,870.06/20,672.45
  6. Step 6: Final answer
    x = 9,944.68

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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.