Home / 20,848.43-31,278.50-8,377.21

Finding the Fourth Proportional to 20,848.43, 31,278.50 and 8,377.21

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Solution

The fourth proportional to 20,848.43, 31,278.50 and 8,377.21 is: 12,568.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,848.43 : 31,278.50 = 8,377.21 : x
  2. Step 2: Convert to fraction form
    20,848.43/31,278.50 = 8,377.21/x
  3. Step 3: Cross multiply
    20,848.43x = 31,278.50 × 8,377.21
  4. Step 4: Simplify right side
    20,848.43x = 262,026,562.99
  5. Step 5: Solve for x
    x = 262,026,562.99/20,848.43
  6. Step 6: Final answer
    x = 12,568.17

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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.