Home / 20,956.19-31,435.26-6,917.45

Finding the Fourth Proportional to 20,956.19, 31,435.26 and 6,917.45

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Solution

The fourth proportional to 20,956.19, 31,435.26 and 6,917.45 is: 10,376.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,956.19 : 31,435.26 = 6,917.45 : x
  2. Step 2: Convert to fraction form
    20,956.19/31,435.26 = 6,917.45/x
  3. Step 3: Cross multiply
    20,956.19x = 31,435.26 × 6,917.45
  4. Step 4: Simplify right side
    20,956.19x = 217,451,682.11
  5. Step 5: Solve for x
    x = 217,451,682.11/20,956.19
  6. Step 6: Final answer
    x = 10,376.49

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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.