Home / 13,448.39-18,558.81-7,480.13

Finding the Fourth Proportional to 13,448.39, 18,558.81 and 7,480.13

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Solution

The fourth proportional to 13,448.39, 18,558.81 and 7,480.13 is: 10,322.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,448.39 : 18,558.81 = 7,480.13 : x
  2. Step 2: Convert to fraction form
    13,448.39/18,558.81 = 7,480.13/x
  3. Step 3: Cross multiply
    13,448.39x = 18,558.81 × 7,480.13
  4. Step 4: Simplify right side
    13,448.39x = 138,822,218.65
  5. Step 5: Solve for x
    x = 138,822,218.65/13,448.39
  6. Step 6: Final answer
    x = 10,322.59

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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.