Home / 13,172.85-19,755.12-4,405.68

Finding the Fourth Proportional to 13,172.85, 19,755.12 and 4,405.68

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Solution

The fourth proportional to 13,172.85, 19,755.12 and 4,405.68 is: 6,607.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,172.85 : 19,755.12 = 4,405.68 : x
  2. Step 2: Convert to fraction form
    13,172.85/19,755.12 = 4,405.68/x
  3. Step 3: Cross multiply
    13,172.85x = 19,755.12 × 4,405.68
  4. Step 4: Simplify right side
    13,172.85x = 87,034,737.08
  5. Step 5: Solve for x
    x = 87,034,737.08/13,172.85
  6. Step 6: Final answer
    x = 6,607.13

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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.