Home / 13,380.90-18,465.62-7,412.56

Finding the Fourth Proportional to 13,380.90, 18,465.62 and 7,412.56

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Solution

The fourth proportional to 13,380.90, 18,465.62 and 7,412.56 is: 10,229.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,380.90 : 18,465.62 = 7,412.56 : x
  2. Step 2: Convert to fraction form
    13,380.90/18,465.62 = 7,412.56/x
  3. Step 3: Cross multiply
    13,380.90x = 18,465.62 × 7,412.56
  4. Step 4: Simplify right side
    13,380.90x = 136,877,516.19
  5. Step 5: Solve for x
    x = 136,877,516.19/13,380.90
  6. Step 6: Final answer
    x = 10,229.32

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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.