Home / 18,809.12-28,210.96-13,169.68

Finding the Fourth Proportional to 18,809.12, 28,210.96 and 13,169.68

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Solution

The fourth proportional to 18,809.12, 28,210.96 and 13,169.68 is: 19,752.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,809.12 : 28,210.96 = 13,169.68 : x
  2. Step 2: Convert to fraction form
    18,809.12/28,210.96 = 13,169.68/x
  3. Step 3: Cross multiply
    18,809.12x = 28,210.96 × 13,169.68
  4. Step 4: Simplify right side
    18,809.12x = 371,529,315.69
  5. Step 5: Solve for x
    x = 371,529,315.69/18,809.12
  6. Step 6: Final answer
    x = 19,752.62

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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.