Home / 12,918.34-17,851.77-11,003.88

Finding the Fourth Proportional to 12,918.34, 17,851.77 and 11,003.88

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Solution

The fourth proportional to 12,918.34, 17,851.77 and 11,003.88 is: 15,206.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,918.34 : 17,851.77 = 11,003.88 : x
  2. Step 2: Convert to fraction form
    12,918.34/17,851.77 = 11,003.88/x
  3. Step 3: Cross multiply
    12,918.34x = 17,851.77 × 11,003.88
  4. Step 4: Simplify right side
    12,918.34x = 196,438,620.24
  5. Step 5: Solve for x
    x = 196,438,620.24/12,918.34
  6. Step 6: Final answer
    x = 15,206.19

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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.