Home / 13,113.70-18,096.67-7,145.42

Finding the Fourth Proportional to 13,113.70, 18,096.67 and 7,145.42

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Solution

The fourth proportional to 13,113.70, 18,096.67 and 7,145.42 is: 9,860.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,113.70 : 18,096.67 = 7,145.42 : x
  2. Step 2: Convert to fraction form
    13,113.70/18,096.67 = 7,145.42/x
  3. Step 3: Cross multiply
    13,113.70x = 18,096.67 × 7,145.42
  4. Step 4: Simplify right side
    13,113.70x = 129,308,217.27
  5. Step 5: Solve for x
    x = 129,308,217.27/13,113.70
  6. Step 6: Final answer
    x = 9,860.55

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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.