Home / 13,148.73-18,145.42-7,180.45

Finding the Fourth Proportional to 13,148.73, 18,145.42 and 7,180.45

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Solution

The fourth proportional to 13,148.73, 18,145.42 and 7,180.45 is: 9,909.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,148.73 : 18,145.42 = 7,180.45 : x
  2. Step 2: Convert to fraction form
    13,148.73/18,145.42 = 7,180.45/x
  3. Step 3: Cross multiply
    13,148.73x = 18,145.42 × 7,180.45
  4. Step 4: Simplify right side
    13,148.73x = 130,292,217.72
  5. Step 5: Solve for x
    x = 130,292,217.72/13,148.73
  6. Step 6: Final answer
    x = 9,909.11

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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.