Home / 18,120.61-27,180.93-4,973.08

Finding the Fourth Proportional to 18,120.61, 27,180.93 and 4,973.08

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Solution

The fourth proportional to 18,120.61, 27,180.93 and 4,973.08 is: 7,459.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,120.61 : 27,180.93 = 4,973.08 : x
  2. Step 2: Convert to fraction form
    18,120.61/27,180.93 = 4,973.08/x
  3. Step 3: Cross multiply
    18,120.61x = 27,180.93 × 4,973.08
  4. Step 4: Simplify right side
    18,120.61x = 135,172,939.36
  5. Step 5: Solve for x
    x = 135,172,939.36/18,120.61
  6. Step 6: Final answer
    x = 7,459.62

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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.