Home / 13,486.20-18,608.70-7,516.56

Finding the Fourth Proportional to 13,486.20, 18,608.70 and 7,516.56

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Solution

The fourth proportional to 13,486.20, 18,608.70 and 7,516.56 is: 10,371.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,486.20 : 18,608.70 = 7,516.56 : x
  2. Step 2: Convert to fraction form
    13,486.20/18,608.70 = 7,516.56/x
  3. Step 3: Cross multiply
    13,486.20x = 18,608.70 × 7,516.56
  4. Step 4: Simplify right side
    13,486.20x = 139,873,410.07
  5. Step 5: Solve for x
    x = 139,873,410.07/13,486.20
  6. Step 6: Final answer
    x = 10,371.60

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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.