Home / 18,837.20-28,221.38-8,823.58

Finding the Fourth Proportional to 18,837.20, 28,221.38 and 8,823.58

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Solution

The fourth proportional to 18,837.20, 28,221.38 and 8,823.58 is: 13,219.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,837.20 : 28,221.38 = 8,823.58 : x
  2. Step 2: Convert to fraction form
    18,837.20/28,221.38 = 8,823.58/x
  3. Step 3: Cross multiply
    18,837.20x = 28,221.38 × 8,823.58
  4. Step 4: Simplify right side
    18,837.20x = 249,013,604.14
  5. Step 5: Solve for x
    x = 249,013,604.14/18,837.20
  6. Step 6: Final answer
    x = 13,219.25

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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.