Home / 13,167.85-18,171.40-7,199.47

Finding the Fourth Proportional to 13,167.85, 18,171.40 and 7,199.47

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Solution

The fourth proportional to 13,167.85, 18,171.40 and 7,199.47 is: 9,935.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,167.85 : 18,171.40 = 7,199.47 : x
  2. Step 2: Convert to fraction form
    13,167.85/18,171.40 = 7,199.47/x
  3. Step 3: Cross multiply
    13,167.85x = 18,171.40 × 7,199.47
  4. Step 4: Simplify right side
    13,167.85x = 130,824,449.16
  5. Step 5: Solve for x
    x = 130,824,449.16/13,167.85
  6. Step 6: Final answer
    x = 9,935.14

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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.