Home / 20,961.85-31,442.04-5,969.06

Finding the Fourth Proportional to 20,961.85, 31,442.04 and 5,969.06

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Solution

The fourth proportional to 20,961.85, 31,442.04 and 5,969.06 is: 8,953.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,961.85 : 31,442.04 = 5,969.06 : x
  2. Step 2: Convert to fraction form
    20,961.85/31,442.04 = 5,969.06/x
  3. Step 3: Cross multiply
    20,961.85x = 31,442.04 × 5,969.06
  4. Step 4: Simplify right side
    20,961.85x = 187,679,423.28
  5. Step 5: Solve for x
    x = 187,679,423.28/20,961.85
  6. Step 6: Final answer
    x = 8,953.38

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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.