Home / 13,376.14-18,458.75-7,710.86

Finding the Fourth Proportional to 13,376.14, 18,458.75 and 7,710.86

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Solution

The fourth proportional to 13,376.14, 18,458.75 and 7,710.86 is: 10,640.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,376.14 : 18,458.75 = 7,710.86 : x
  2. Step 2: Convert to fraction form
    13,376.14/18,458.75 = 7,710.86/x
  3. Step 3: Cross multiply
    13,376.14x = 18,458.75 × 7,710.86
  4. Step 4: Simplify right side
    13,376.14x = 142,332,902.45
  5. Step 5: Solve for x
    x = 142,332,902.45/13,376.14
  6. Step 6: Final answer
    x = 10,640.81

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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.