Home / 12,681.11-17,496.79-8,199.47

Finding the Fourth Proportional to 12,681.11, 17,496.79 and 8,199.47

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Solution

The fourth proportional to 12,681.11, 17,496.79 and 8,199.47 is: 11,313.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,681.11 : 17,496.79 = 8,199.47 : x
  2. Step 2: Convert to fraction form
    12,681.11/17,496.79 = 8,199.47/x
  3. Step 3: Cross multiply
    12,681.11x = 17,496.79 × 8,199.47
  4. Step 4: Simplify right side
    12,681.11x = 143,464,384.20
  5. Step 5: Solve for x
    x = 143,464,384.20/12,681.11
  6. Step 6: Final answer
    x = 11,313.23

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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.