Home / 12,943.13-17,867.13-8,167.37

Finding the Fourth Proportional to 12,943.13, 17,867.13 and 8,167.37

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Solution

The fourth proportional to 12,943.13, 17,867.13 and 8,167.37 is: 11,274.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,943.13 : 17,867.13 = 8,167.37 : x
  2. Step 2: Convert to fraction form
    12,943.13/17,867.13 = 8,167.37/x
  3. Step 3: Cross multiply
    12,943.13x = 17,867.13 × 8,167.37
  4. Step 4: Simplify right side
    12,943.13x = 145,927,461.55
  5. Step 5: Solve for x
    x = 145,927,461.55/12,943.13
  6. Step 6: Final answer
    x = 11,274.51

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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.