Home / 13,590.92-20,378.64-4,228.04

Finding the Fourth Proportional to 13,590.92, 20,378.64 and 4,228.04

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Solution

The fourth proportional to 13,590.92, 20,378.64 and 4,228.04 is: 6,339.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,590.92 : 20,378.64 = 4,228.04 : x
  2. Step 2: Convert to fraction form
    13,590.92/20,378.64 = 4,228.04/x
  3. Step 3: Cross multiply
    13,590.92x = 20,378.64 × 4,228.04
  4. Step 4: Simplify right side
    13,590.92x = 86,161,705.07
  5. Step 5: Solve for x
    x = 86,161,705.07/13,590.92
  6. Step 6: Final answer
    x = 6,339.65

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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.