Home / 18,689.28-28,039.35-5,541.99

Finding the Fourth Proportional to 18,689.28, 28,039.35 and 5,541.99

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Solution

The fourth proportional to 18,689.28, 28,039.35 and 5,541.99 is: 8,314.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,689.28 : 28,039.35 = 5,541.99 : x
  2. Step 2: Convert to fraction form
    18,689.28/28,039.35 = 5,541.99/x
  3. Step 3: Cross multiply
    18,689.28x = 28,039.35 × 5,541.99
  4. Step 4: Simplify right side
    18,689.28x = 155,393,797.31
  5. Step 5: Solve for x
    x = 155,393,797.31/18,689.28
  6. Step 6: Final answer
    x = 8,314.60

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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.