Home / 14,780.04-20,401.32-8,813.56

Finding the Fourth Proportional to 14,780.04, 20,401.32 and 8,813.56

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Solution

The fourth proportional to 14,780.04, 20,401.32 and 8,813.56 is: 12,165.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,780.04 : 20,401.32 = 8,813.56 : x
  2. Step 2: Convert to fraction form
    14,780.04/20,401.32 = 8,813.56/x
  3. Step 3: Cross multiply
    14,780.04x = 20,401.32 × 8,813.56
  4. Step 4: Simplify right side
    14,780.04x = 179,808,257.90
  5. Step 5: Solve for x
    x = 179,808,257.90/14,780.04
  6. Step 6: Final answer
    x = 12,165.61

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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.