Home / 13,449.63-18,558.68-7,480.54

Finding the Fourth Proportional to 13,449.63, 18,558.68 and 7,480.54

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Solution

The fourth proportional to 13,449.63, 18,558.68 and 7,480.54 is: 10,322.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,449.63 : 18,558.68 = 7,480.54 : x
  2. Step 2: Convert to fraction form
    13,449.63/18,558.68 = 7,480.54/x
  3. Step 3: Cross multiply
    13,449.63x = 18,558.68 × 7,480.54
  4. Step 4: Simplify right side
    13,449.63x = 138,828,948.09
  5. Step 5: Solve for x
    x = 138,828,948.09/13,449.63
  6. Step 6: Final answer
    x = 10,322.14

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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.