Home / 20,994.05-31,491.38-5,411.68

Finding the Fourth Proportional to 20,994.05, 31,491.38 and 5,411.68

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Solution

The fourth proportional to 20,994.05, 31,491.38 and 5,411.68 is: 8,117.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,994.05 : 31,491.38 = 5,411.68 : x
  2. Step 2: Convert to fraction form
    20,994.05/31,491.38 = 5,411.68/x
  3. Step 3: Cross multiply
    20,994.05x = 31,491.38 × 5,411.68
  4. Step 4: Simplify right side
    20,994.05x = 170,421,206.12
  5. Step 5: Solve for x
    x = 170,421,206.12/20,994.05
  6. Step 6: Final answer
    x = 8,117.59

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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.