Home / 14,787.45-20,409.98-9,408.85

Finding the Fourth Proportional to 14,787.45, 20,409.98 and 9,408.85

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Solution

The fourth proportional to 14,787.45, 20,409.98 and 9,408.85 is: 12,986.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,787.45 : 20,409.98 = 9,408.85 : x
  2. Step 2: Convert to fraction form
    14,787.45/20,409.98 = 9,408.85/x
  3. Step 3: Cross multiply
    14,787.45x = 20,409.98 × 9,408.85
  4. Step 4: Simplify right side
    14,787.45x = 192,034,342.25
  5. Step 5: Solve for x
    x = 192,034,342.25/14,787.45
  6. Step 6: Final answer
    x = 12,986.31

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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.