Home / 13,590.75-20,389.05-4,230.57

Finding the Fourth Proportional to 13,590.75, 20,389.05 and 4,230.57

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Solution

The fourth proportional to 13,590.75, 20,389.05 and 4,230.57 is: 6,346.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,590.75 : 20,389.05 = 4,230.57 : x
  2. Step 2: Convert to fraction form
    13,590.75/20,389.05 = 4,230.57/x
  3. Step 3: Cross multiply
    13,590.75x = 20,389.05 × 4,230.57
  4. Step 4: Simplify right side
    13,590.75x = 86,257,303.26
  5. Step 5: Solve for x
    x = 86,257,303.26/13,590.75
  6. Step 6: Final answer
    x = 6,346.77

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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.