Home / 15,408.44-21,263.65-8,695.49

Finding the Fourth Proportional to 15,408.44, 21,263.65 and 8,695.49

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Solution

The fourth proportional to 15,408.44, 21,263.65 and 8,695.49 is: 11,999.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,408.44 : 21,263.65 = 8,695.49 : x
  2. Step 2: Convert to fraction form
    15,408.44/21,263.65 = 8,695.49/x
  3. Step 3: Cross multiply
    15,408.44x = 21,263.65 × 8,695.49
  4. Step 4: Simplify right side
    15,408.44x = 184,897,855.94
  5. Step 5: Solve for x
    x = 184,897,855.94/15,408.44
  6. Step 6: Final answer
    x = 11,999.78

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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.