Home / 18,122.95-27,181.23-4,972.15

Finding the Fourth Proportional to 18,122.95, 27,181.23 and 4,972.15

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Solution

The fourth proportional to 18,122.95, 27,181.23 and 4,972.15 is: 7,457.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,122.95 : 27,181.23 = 4,972.15 : x
  2. Step 2: Convert to fraction form
    18,122.95/27,181.23 = 4,972.15/x
  3. Step 3: Cross multiply
    18,122.95x = 27,181.23 × 4,972.15
  4. Step 4: Simplify right side
    18,122.95x = 135,149,152.74
  5. Step 5: Solve for x
    x = 135,149,152.74/18,122.95
  6. Step 6: Final answer
    x = 7,457.35

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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.