Home / 14,781.31-20,396.42-8,408.71

Finding the Fourth Proportional to 14,781.31, 20,396.42 and 8,408.71

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Solution

The fourth proportional to 14,781.31, 20,396.42 and 8,408.71 is: 11,603.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,781.31 : 20,396.42 = 8,408.71 : x
  2. Step 2: Convert to fraction form
    14,781.31/20,396.42 = 8,408.71/x
  3. Step 3: Cross multiply
    14,781.31x = 20,396.42 × 8,408.71
  4. Step 4: Simplify right side
    14,781.31x = 171,507,580.82
  5. Step 5: Solve for x
    x = 171,507,580.82/14,781.31
  6. Step 6: Final answer
    x = 11,603.00

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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.