Home / 18,862.10-28,276.41-9,489.86

Finding the Fourth Proportional to 18,862.10, 28,276.41 and 9,489.86

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Solution

The fourth proportional to 18,862.10, 28,276.41 and 9,489.86 is: 14,226.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,862.10 : 28,276.41 = 9,489.86 : x
  2. Step 2: Convert to fraction form
    18,862.10/28,276.41 = 9,489.86/x
  3. Step 3: Cross multiply
    18,862.10x = 28,276.41 × 9,489.86
  4. Step 4: Simplify right side
    18,862.10x = 268,339,172.20
  5. Step 5: Solve for x
    x = 268,339,172.20/18,862.10
  6. Step 6: Final answer
    x = 14,226.37

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1.5x scale

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.