Home / 13,743.96-18,979.32-13,007.40

Finding the Fourth Proportional to 13,743.96, 18,979.32 and 13,007.40

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Solution

The fourth proportional to 13,743.96, 18,979.32 and 13,007.40 is: 17,962.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,743.96 : 18,979.32 = 13,007.40 : x
  2. Step 2: Convert to fraction form
    13,743.96/18,979.32 = 13,007.40/x
  3. Step 3: Cross multiply
    13,743.96x = 18,979.32 × 13,007.40
  4. Step 4: Simplify right side
    13,743.96x = 246,871,606.97
  5. Step 5: Solve for x
    x = 246,871,606.97/13,743.96
  6. Step 6: Final answer
    x = 17,962.19

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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.