Home / 13,325.57-18,387.32-7,660.56

Finding the Fourth Proportional to 13,325.57, 18,387.32 and 7,660.56

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Solution

The fourth proportional to 13,325.57, 18,387.32 and 7,660.56 is: 10,570.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,325.57 : 18,387.32 = 7,660.56 : x
  2. Step 2: Convert to fraction form
    13,325.57/18,387.32 = 7,660.56/x
  3. Step 3: Cross multiply
    13,325.57x = 18,387.32 × 7,660.56
  4. Step 4: Simplify right side
    13,325.57x = 140,857,037.86
  5. Step 5: Solve for x
    x = 140,857,037.86/13,325.57
  6. Step 6: Final answer
    x = 10,570.43

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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.