Home / 20,961.10-31,432.42-11,098.07

Finding the Fourth Proportional to 20,961.10, 31,432.42 and 11,098.07

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Solution

The fourth proportional to 20,961.10, 31,432.42 and 11,098.07 is: 16,642.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,961.10 : 31,432.42 = 11,098.07 : x
  2. Step 2: Convert to fraction form
    20,961.10/31,432.42 = 11,098.07/x
  3. Step 3: Cross multiply
    20,961.10x = 31,432.42 × 11,098.07
  4. Step 4: Simplify right side
    20,961.10x = 348,839,109.58
  5. Step 5: Solve for x
    x = 348,839,109.58/20,961.10
  6. Step 6: Final answer
    x = 16,642.22

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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.