Home / 11,918.88-17,813.64-10,985.12

Finding the Fourth Proportional to 11,918.88, 17,813.64 and 10,985.12

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Solution

The fourth proportional to 11,918.88, 17,813.64 and 10,985.12 is: 16,418.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,918.88 : 17,813.64 = 10,985.12 : x
  2. Step 2: Convert to fraction form
    11,918.88/17,813.64 = 10,985.12/x
  3. Step 3: Cross multiply
    11,918.88x = 17,813.64 × 10,985.12
  4. Step 4: Simplify right side
    11,918.88x = 195,684,973.04
  5. Step 5: Solve for x
    x = 195,684,973.04/11,918.88
  6. Step 6: Final answer
    x = 16,418.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.