Home / 13,752.30-20,620.68-4,390.12

Finding the Fourth Proportional to 13,752.30, 20,620.68 and 4,390.12

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Solution

The fourth proportional to 13,752.30, 20,620.68 and 4,390.12 is: 6,582.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,752.30 : 20,620.68 = 4,390.12 : x
  2. Step 2: Convert to fraction form
    13,752.30/20,620.68 = 4,390.12/x
  3. Step 3: Cross multiply
    13,752.30x = 20,620.68 × 4,390.12
  4. Step 4: Simplify right side
    13,752.30x = 90,527,259.68
  5. Step 5: Solve for x
    x = 90,527,259.68/13,752.30
  6. Step 6: Final answer
    x = 6,582.70

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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.