Home / 20,830.19-31,248.54-6,786.96

Finding the Fourth Proportional to 20,830.19, 31,248.54 and 6,786.96

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Solution

The fourth proportional to 20,830.19, 31,248.54 and 6,786.96 is: 10,181.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,830.19 : 31,248.54 = 6,786.96 : x
  2. Step 2: Convert to fraction form
    20,830.19/31,248.54 = 6,786.96/x
  3. Step 3: Cross multiply
    20,830.19x = 31,248.54 × 6,786.96
  4. Step 4: Simplify right side
    20,830.19x = 212,082,591.04
  5. Step 5: Solve for x
    x = 212,082,591.04/20,830.19
  6. Step 6: Final answer
    x = 10,181.50

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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.