Home / 18,998.90-28,498.68-4,958.07

Finding the Fourth Proportional to 18,998.90, 28,498.68 and 4,958.07

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Solution

The fourth proportional to 18,998.90, 28,498.68 and 4,958.07 is: 7,437.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,998.90 : 28,498.68 = 4,958.07 : x
  2. Step 2: Convert to fraction form
    18,998.90/28,498.68 = 4,958.07/x
  3. Step 3: Cross multiply
    18,998.90x = 28,498.68 × 4,958.07
  4. Step 4: Simplify right side
    18,998.90x = 141,298,450.35
  5. Step 5: Solve for x
    x = 141,298,450.35/18,998.90
  6. Step 6: Final answer
    x = 7,437.19

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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.