Home / 28,638.08-42,906.30-11,961.42

Finding the Fourth Proportional to 28,638.08, 42,906.30 and 11,961.42

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Solution

The fourth proportional to 28,638.08, 42,906.30 and 11,961.42 is: 17,920.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,638.08 : 42,906.30 = 11,961.42 : x
  2. Step 2: Convert to fraction form
    28,638.08/42,906.30 = 11,961.42/x
  3. Step 3: Cross multiply
    28,638.08x = 42,906.30 × 11,961.42
  4. Step 4: Simplify right side
    28,638.08x = 513,220,274.95
  5. Step 5: Solve for x
    x = 513,220,274.95/28,638.08
  6. Step 6: Final answer
    x = 17,920.91

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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.