Home / 13,351.83-18,425.45-7,976.70

Finding the Fourth Proportional to 13,351.83, 18,425.45 and 7,976.70

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Solution

The fourth proportional to 13,351.83, 18,425.45 and 7,976.70 is: 11,007.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,351.83 : 18,425.45 = 7,976.70 : x
  2. Step 2: Convert to fraction form
    13,351.83/18,425.45 = 7,976.70/x
  3. Step 3: Cross multiply
    13,351.83x = 18,425.45 × 7,976.70
  4. Step 4: Simplify right side
    13,351.83x = 146,974,247.13
  5. Step 5: Solve for x
    x = 146,974,247.13/13,351.83
  6. Step 6: Final answer
    x = 11,007.80

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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.