Home / 11,215.97-15,483.65-8,692.41

Finding the Fourth Proportional to 11,215.97, 15,483.65 and 8,692.41

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Solution

The fourth proportional to 11,215.97, 15,483.65 and 8,692.41 is: 11,999.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,215.97 : 15,483.65 = 8,692.41 : x
  2. Step 2: Convert to fraction form
    11,215.97/15,483.65 = 8,692.41/x
  3. Step 3: Cross multiply
    11,215.97x = 15,483.65 × 8,692.41
  4. Step 4: Simplify right side
    11,215.97x = 134,590,248.70
  5. Step 5: Solve for x
    x = 134,590,248.70/11,215.97
  6. Step 6: Final answer
    x = 11,999.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.