Home / 9,419.53-12,999.11-5,170.99

Finding the Fourth Proportional to 9,419.53, 12,999.11 and 5,170.99

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Solution

The fourth proportional to 9,419.53, 12,999.11 and 5,170.99 is: 7,136.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,419.53 : 12,999.11 = 5,170.99 : x
  2. Step 2: Convert to fraction form
    9,419.53/12,999.11 = 5,170.99/x
  3. Step 3: Cross multiply
    9,419.53x = 12,999.11 × 5,170.99
  4. Step 4: Simplify right side
    9,419.53x = 67,218,267.82
  5. Step 5: Solve for x
    x = 67,218,267.82/9,419.53
  6. Step 6: Final answer
    x = 7,136.05

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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.