Home / 18,135.54-27,203.49-5,655.06

Finding the Fourth Proportional to 18,135.54, 27,203.49 and 5,655.06

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Solution

The fourth proportional to 18,135.54, 27,203.49 and 5,655.06 is: 8,482.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,135.54 : 27,203.49 = 5,655.06 : x
  2. Step 2: Convert to fraction form
    18,135.54/27,203.49 = 5,655.06/x
  3. Step 3: Cross multiply
    18,135.54x = 27,203.49 × 5,655.06
  4. Step 4: Simplify right side
    18,135.54x = 153,837,368.16
  5. Step 5: Solve for x
    x = 153,837,368.16/18,135.54
  6. Step 6: Final answer
    x = 8,482.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.