Home / 20,989.10-31,476.30-6,194.10

Finding the Fourth Proportional to 20,989.10, 31,476.30 and 6,194.10

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Solution

The fourth proportional to 20,989.10, 31,476.30 and 6,194.10 is: 9,288.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,989.10 : 31,476.30 = 6,194.10 : x
  2. Step 2: Convert to fraction form
    20,989.10/31,476.30 = 6,194.10/x
  3. Step 3: Cross multiply
    20,989.10x = 31,476.30 × 6,194.10
  4. Step 4: Simplify right side
    20,989.10x = 194,967,349.83
  5. Step 5: Solve for x
    x = 194,967,349.83/20,989.10
  6. Step 6: Final answer
    x = 9,288.98

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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.