Home / 18,929.75-28,394.70-5,782.08

Finding the Fourth Proportional to 18,929.75, 28,394.70 and 5,782.08

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Solution

The fourth proportional to 18,929.75, 28,394.70 and 5,782.08 is: 8,673.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,929.75 : 28,394.70 = 5,782.08 : x
  2. Step 2: Convert to fraction form
    18,929.75/28,394.70 = 5,782.08/x
  3. Step 3: Cross multiply
    18,929.75x = 28,394.70 × 5,782.08
  4. Step 4: Simplify right side
    18,929.75x = 164,180,544.30
  5. Step 5: Solve for x
    x = 164,180,544.30/18,929.75
  6. Step 6: Final answer
    x = 8,673.15

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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.