Home / 13,168.47-18,075.75-11,642.97

Finding the Fourth Proportional to 13,168.47, 18,075.75 and 11,642.97

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Solution

The fourth proportional to 13,168.47, 18,075.75 and 11,642.97 is: 15,981.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,168.47 : 18,075.75 = 11,642.97 : x
  2. Step 2: Convert to fraction form
    13,168.47/18,075.75 = 11,642.97/x
  3. Step 3: Cross multiply
    13,168.47x = 18,075.75 × 11,642.97
  4. Step 4: Simplify right side
    13,168.47x = 210,455,414.98
  5. Step 5: Solve for x
    x = 210,455,414.98/13,168.47
  6. Step 6: Final answer
    x = 15,981.77

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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.