Home / 13,918.47-19,208.49-8,616.36

Finding the Fourth Proportional to 13,918.47, 19,208.49 and 8,616.36

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Solution

The fourth proportional to 13,918.47, 19,208.49 and 8,616.36 is: 11,891.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,918.47 : 19,208.49 = 8,616.36 : x
  2. Step 2: Convert to fraction form
    13,918.47/19,208.49 = 8,616.36/x
  3. Step 3: Cross multiply
    13,918.47x = 19,208.49 × 8,616.36
  4. Step 4: Simplify right side
    13,918.47x = 165,507,264.90
  5. Step 5: Solve for x
    x = 165,507,264.90/13,918.47
  6. Step 6: Final answer
    x = 11,891.20

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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.