Home / 13,101.66-18,080.40-7,133.37

Finding the Fourth Proportional to 13,101.66, 18,080.40 and 7,133.37

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Solution

The fourth proportional to 13,101.66, 18,080.40 and 7,133.37 is: 9,844.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,101.66 : 18,080.40 = 7,133.37 : x
  2. Step 2: Convert to fraction form
    13,101.66/18,080.40 = 7,133.37/x
  3. Step 3: Cross multiply
    13,101.66x = 18,080.40 × 7,133.37
  4. Step 4: Simplify right side
    13,101.66x = 128,974,182.95
  5. Step 5: Solve for x
    x = 128,974,182.95/13,101.66
  6. Step 6: Final answer
    x = 9,844.11

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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.