Home / 13,516.72-18,653.64-7,550.32

Finding the Fourth Proportional to 13,516.72, 18,653.64 and 7,550.32

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Solution

The fourth proportional to 13,516.72, 18,653.64 and 7,550.32 is: 10,419.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,516.72 : 18,653.64 = 7,550.32 : x
  2. Step 2: Convert to fraction form
    13,516.72/18,653.64 = 7,550.32/x
  3. Step 3: Cross multiply
    13,516.72x = 18,653.64 × 7,550.32
  4. Step 4: Simplify right side
    13,516.72x = 140,840,951.16
  5. Step 5: Solve for x
    x = 140,840,951.16/13,516.72
  6. Step 6: Final answer
    x = 10,419.76

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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.