Home / 10,128.61-13,976.81-6,351.62

Finding the Fourth Proportional to 10,128.61, 13,976.81 and 6,351.62

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Solution

The fourth proportional to 10,128.61, 13,976.81 and 6,351.62 is: 8,764.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,128.61 : 13,976.81 = 6,351.62 : x
  2. Step 2: Convert to fraction form
    10,128.61/13,976.81 = 6,351.62/x
  3. Step 3: Cross multiply
    10,128.61x = 13,976.81 × 6,351.62
  4. Step 4: Simplify right side
    10,128.61x = 88,775,308.11
  5. Step 5: Solve for x
    x = 88,775,308.11/10,128.61
  6. Step 6: Final answer
    x = 8,764.81

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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.