Home / 21,366.18-29,475.75-12,408.83

Finding the Fourth Proportional to 21,366.18, 29,475.75 and 12,408.83

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Solution

The fourth proportional to 21,366.18, 29,475.75 and 12,408.83 is: 17,118.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,366.18 : 29,475.75 = 12,408.83 : x
  2. Step 2: Convert to fraction form
    21,366.18/29,475.75 = 12,408.83/x
  3. Step 3: Cross multiply
    21,366.18x = 29,475.75 × 12,408.83
  4. Step 4: Simplify right side
    21,366.18x = 365,759,361.45
  5. Step 5: Solve for x
    x = 365,759,361.45/21,366.18
  6. Step 6: Final answer
    x = 17,118.62

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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.