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Finding the Fourth Proportional to 19,408.79, 29,113.18 and 15,494.87

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Solution

The fourth proportional to 19,408.79, 29,113.18 and 15,494.87 is: 23,242.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,408.79 : 29,113.18 = 15,494.87 : x
  2. Step 2: Convert to fraction form
    19,408.79/29,113.18 = 15,494.87/x
  3. Step 3: Cross multiply
    19,408.79x = 29,113.18 × 15,494.87
  4. Step 4: Simplify right side
    19,408.79x = 451,104,755.08
  5. Step 5: Solve for x
    x = 451,104,755.08/19,408.79
  6. Step 6: Final answer
    x = 23,242.30

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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.