Home / 13,148.26-18,142.45-7,769.95

Finding the Fourth Proportional to 13,148.26, 18,142.45 and 7,769.95

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Solution

The fourth proportional to 13,148.26, 18,142.45 and 7,769.95 is: 10,721.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,148.26 : 18,142.45 = 7,769.95 : x
  2. Step 2: Convert to fraction form
    13,148.26/18,142.45 = 7,769.95/x
  3. Step 3: Cross multiply
    13,148.26x = 18,142.45 × 7,769.95
  4. Step 4: Simplify right side
    13,148.26x = 140,965,864.60
  5. Step 5: Solve for x
    x = 140,965,864.60/13,148.26
  6. Step 6: Final answer
    x = 10,721.26

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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.