Home / 13,805.31-20,693.39-6,775.55

Finding the Fourth Proportional to 13,805.31, 20,693.39 and 6,775.55

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Solution

The fourth proportional to 13,805.31, 20,693.39 and 6,775.55 is: 10,156.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,805.31 : 20,693.39 = 6,775.55 : x
  2. Step 2: Convert to fraction form
    13,805.31/20,693.39 = 6,775.55/x
  3. Step 3: Cross multiply
    13,805.31x = 20,693.39 × 6,775.55
  4. Step 4: Simplify right side
    13,805.31x = 140,208,961.27
  5. Step 5: Solve for x
    x = 140,208,961.27/13,805.31
  6. Step 6: Final answer
    x = 10,156.16

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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.