Home / 18,390.56-27,577.65-5,239.82

Finding the Fourth Proportional to 18,390.56, 27,577.65 and 5,239.82

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Solution

The fourth proportional to 18,390.56, 27,577.65 and 5,239.82 is: 7,857.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,390.56 : 27,577.65 = 5,239.82 : x
  2. Step 2: Convert to fraction form
    18,390.56/27,577.65 = 5,239.82/x
  3. Step 3: Cross multiply
    18,390.56x = 27,577.65 × 5,239.82
  4. Step 4: Simplify right side
    18,390.56x = 144,501,922.02
  5. Step 5: Solve for x
    x = 144,501,922.02/18,390.56
  6. Step 6: Final answer
    x = 7,857.40

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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.