Home / 20,774.98-31,155.33-6,731.40

Finding the Fourth Proportional to 20,774.98, 31,155.33 and 6,731.40

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Solution

The fourth proportional to 20,774.98, 31,155.33 and 6,731.40 is: 10,094.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,774.98 : 31,155.33 = 6,731.40 : x
  2. Step 2: Convert to fraction form
    20,774.98/31,155.33 = 6,731.40/x
  3. Step 3: Cross multiply
    20,774.98x = 31,155.33 × 6,731.40
  4. Step 4: Simplify right side
    20,774.98x = 209,719,130.44
  5. Step 5: Solve for x
    x = 209,719,130.44/20,774.98
  6. Step 6: Final answer
    x = 10,094.79

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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.