Home / 18,558.20-27,815.70-7,459.40

Finding the Fourth Proportional to 18,558.20, 27,815.70 and 7,459.40

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Solution

The fourth proportional to 18,558.20, 27,815.70 and 7,459.40 is: 11,180.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,558.20 : 27,815.70 = 7,459.40 : x
  2. Step 2: Convert to fraction form
    18,558.20/27,815.70 = 7,459.40/x
  3. Step 3: Cross multiply
    18,558.20x = 27,815.70 × 7,459.40
  4. Step 4: Simplify right side
    18,558.20x = 207,488,432.58
  5. Step 5: Solve for x
    x = 207,488,432.58/18,558.20
  6. Step 6: Final answer
    x = 11,180.42

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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.