Home / 15,408.16-21,263.24-8,693.80

Finding the Fourth Proportional to 15,408.16, 21,263.24 and 8,693.80

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Solution

The fourth proportional to 15,408.16, 21,263.24 and 8,693.80 is: 11,997.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,408.16 : 21,263.24 = 8,693.80 : x
  2. Step 2: Convert to fraction form
    15,408.16/21,263.24 = 8,693.80/x
  3. Step 3: Cross multiply
    15,408.16x = 21,263.24 × 8,693.80
  4. Step 4: Simplify right side
    15,408.16x = 184,858,355.91
  5. Step 5: Solve for x
    x = 184,858,355.91/15,408.16
  6. Step 6: Final answer
    x = 11,997.43

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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.