Home / 12,940.23-17,857.26-8,159.20

Finding the Fourth Proportional to 12,940.23, 17,857.26 and 8,159.20

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Solution

The fourth proportional to 12,940.23, 17,857.26 and 8,159.20 is: 11,259.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,940.23 : 17,857.26 = 8,159.20 : x
  2. Step 2: Convert to fraction form
    12,940.23/17,857.26 = 8,159.20/x
  3. Step 3: Cross multiply
    12,940.23x = 17,857.26 × 8,159.20
  4. Step 4: Simplify right side
    12,940.23x = 145,700,955.79
  5. Step 5: Solve for x
    x = 145,700,955.79/12,940.23
  6. Step 6: Final answer
    x = 11,259.53

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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.