Home / 13,388.68-18,473.97-7,722.10

Finding the Fourth Proportional to 13,388.68, 18,473.97 and 7,722.10

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Solution

The fourth proportional to 13,388.68, 18,473.97 and 7,722.10 is: 10,655.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,388.68 : 18,473.97 = 7,722.10 : x
  2. Step 2: Convert to fraction form
    13,388.68/18,473.97 = 7,722.10/x
  3. Step 3: Cross multiply
    13,388.68x = 18,473.97 × 7,722.10
  4. Step 4: Simplify right side
    13,388.68x = 142,657,843.74
  5. Step 5: Solve for x
    x = 142,657,843.74/13,388.68
  6. Step 6: Final answer
    x = 10,655.11

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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.