Home / 18,618.94-27,878.60-15,666.50

Finding the Fourth Proportional to 18,618.94, 27,878.60 and 15,666.50

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Solution

The fourth proportional to 18,618.94, 27,878.60 and 15,666.50 is: 23,457.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,618.94 : 27,878.60 = 15,666.50 : x
  2. Step 2: Convert to fraction form
    18,618.94/27,878.60 = 15,666.50/x
  3. Step 3: Cross multiply
    18,618.94x = 27,878.60 × 15,666.50
  4. Step 4: Simplify right side
    18,618.94x = 436,760,086.90
  5. Step 5: Solve for x
    x = 436,760,086.90/18,618.94
  6. Step 6: Final answer
    x = 23,457.84

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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.