Home / 13,167.36-18,171.18-7,199.28

Finding the Fourth Proportional to 13,167.36, 18,171.18 and 7,199.28

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Solution

The fourth proportional to 13,167.36, 18,171.18 and 7,199.28 is: 9,935.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,167.36 : 18,171.18 = 7,199.28 : x
  2. Step 2: Convert to fraction form
    13,167.36/18,171.18 = 7,199.28/x
  3. Step 3: Cross multiply
    13,167.36x = 18,171.18 × 7,199.28
  4. Step 4: Simplify right side
    13,167.36x = 130,819,412.75
  5. Step 5: Solve for x
    x = 130,819,412.75/13,167.36
  6. Step 6: Final answer
    x = 9,935.13

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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.