Home / 20,948.05-31,422.08-6,156.97

Finding the Fourth Proportional to 20,948.05, 31,422.08 and 6,156.97

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Solution

The fourth proportional to 20,948.05, 31,422.08 and 6,156.97 is: 9,235.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,948.05 : 31,422.08 = 6,156.97 : x
  2. Step 2: Convert to fraction form
    20,948.05/31,422.08 = 6,156.97/x
  3. Step 3: Cross multiply
    20,948.05x = 31,422.08 × 6,156.97
  4. Step 4: Simplify right side
    20,948.05x = 193,464,803.90
  5. Step 5: Solve for x
    x = 193,464,803.90/20,948.05
  6. Step 6: Final answer
    x = 9,235.46

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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.