Home / 20,910.08-29,056-20,648.96

Finding the Fourth Proportional to 20,910.08, 29,056 and 20,648.96

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Solution

The fourth proportional to 20,910.08, 29,056 and 20,648.96 is: 28,693.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,910.08 : 29,056 = 20,648.96 : x
  2. Step 2: Convert to fraction form
    20,910.08/29,056 = 20,648.96/x
  3. Step 3: Cross multiply
    20,910.08x = 29,056 × 20,648.96
  4. Step 4: Simplify right side
    20,910.08x = 599,976,181.76
  5. Step 5: Solve for x
    x = 599,976,181.76/20,910.08
  6. Step 6: Final answer
    x = 28,693.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.