Home / 13,167.97-18,075.07-11,642.47

Finding the Fourth Proportional to 13,167.97, 18,075.07 and 11,642.47

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Solution

The fourth proportional to 13,167.97, 18,075.07 and 11,642.47 is: 15,981.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,167.97 : 18,075.07 = 11,642.47 : x
  2. Step 2: Convert to fraction form
    13,167.97/18,075.07 = 11,642.47/x
  3. Step 3: Cross multiply
    13,167.97x = 18,075.07 × 11,642.47
  4. Step 4: Simplify right side
    13,167.97x = 210,438,460.22
  5. Step 5: Solve for x
    x = 210,438,460.22/13,167.97
  6. Step 6: Final answer
    x = 15,981.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.