Home / 13,390.97-18,480.64-7,424.51

Finding the Fourth Proportional to 13,390.97, 18,480.64 and 7,424.51

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Solution

The fourth proportional to 13,390.97, 18,480.64 and 7,424.51 is: 10,246.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,390.97 : 18,480.64 = 7,424.51 : x
  2. Step 2: Convert to fraction form
    13,390.97/18,480.64 = 7,424.51/x
  3. Step 3: Cross multiply
    13,390.97x = 18,480.64 × 7,424.51
  4. Step 4: Simplify right side
    13,390.97x = 137,209,585.52
  5. Step 5: Solve for x
    x = 137,209,585.52/13,390.97
  6. Step 6: Final answer
    x = 10,246.43

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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.