Home / 13,149.54-18,148.68-7,844.70

Finding the Fourth Proportional to 13,149.54, 18,148.68 and 7,844.70

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Solution

The fourth proportional to 13,149.54, 18,148.68 and 7,844.70 is: 10,827.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,149.54 : 18,148.68 = 7,844.70 : x
  2. Step 2: Convert to fraction form
    13,149.54/18,148.68 = 7,844.70/x
  3. Step 3: Cross multiply
    13,149.54x = 18,148.68 × 7,844.70
  4. Step 4: Simplify right side
    13,149.54x = 142,370,950.00
  5. Step 5: Solve for x
    x = 142,370,950.00/13,149.54
  6. Step 6: Final answer
    x = 10,827.07

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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.