Home / 13,498.68-18,628.20-7,448.78

Finding the Fourth Proportional to 13,498.68, 18,628.20 and 7,448.78

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Solution

The fourth proportional to 13,498.68, 18,628.20 and 7,448.78 is: 10,279.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,498.68 : 18,628.20 = 7,448.78 : x
  2. Step 2: Convert to fraction form
    13,498.68/18,628.20 = 7,448.78/x
  3. Step 3: Cross multiply
    13,498.68x = 18,628.20 × 7,448.78
  4. Step 4: Simplify right side
    13,498.68x = 138,757,363.60
  5. Step 5: Solve for x
    x = 138,757,363.60/13,498.68
  6. Step 6: Final answer
    x = 10,279.33

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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.