Home / 13,115.53-18,099.80-7,450.45

Finding the Fourth Proportional to 13,115.53, 18,099.80 and 7,450.45

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Solution

The fourth proportional to 13,115.53, 18,099.80 and 7,450.45 is: 10,281.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,115.53 : 18,099.80 = 7,450.45 : x
  2. Step 2: Convert to fraction form
    13,115.53/18,099.80 = 7,450.45/x
  3. Step 3: Cross multiply
    13,115.53x = 18,099.80 × 7,450.45
  4. Step 4: Simplify right side
    13,115.53x = 134,851,654.91
  5. Step 5: Solve for x
    x = 134,851,654.91/13,115.53
  6. Step 6: Final answer
    x = 10,281.83

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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.