Home / 12,945.12-17,857.26-10,693.68

Finding the Fourth Proportional to 12,945.12, 17,857.26 and 10,693.68

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Solution

The fourth proportional to 12,945.12, 17,857.26 and 10,693.68 is: 14,751.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,945.12 : 17,857.26 = 10,693.68 : x
  2. Step 2: Convert to fraction form
    12,945.12/17,857.26 = 10,693.68/x
  3. Step 3: Cross multiply
    12,945.12x = 17,857.26 × 10,693.68
  4. Step 4: Simplify right side
    12,945.12x = 190,959,824.12
  5. Step 5: Solve for x
    x = 190,959,824.12/12,945.12
  6. Step 6: Final answer
    x = 14,751.49

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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.