Home / 13,590.74-20,389.04-4,230.58

Finding the Fourth Proportional to 13,590.74, 20,389.04 and 4,230.58

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Solution

The fourth proportional to 13,590.74, 20,389.04 and 4,230.58 is: 6,346.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,590.74 : 20,389.04 = 4,230.58 : x
  2. Step 2: Convert to fraction form
    13,590.74/20,389.04 = 4,230.58/x
  3. Step 3: Cross multiply
    13,590.74x = 20,389.04 × 4,230.58
  4. Step 4: Simplify right side
    13,590.74x = 86,257,464.84
  5. Step 5: Solve for x
    x = 86,257,464.84/13,590.74
  6. Step 6: Final answer
    x = 6,346.78

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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.