Home / 18,320.80-27,489.96-12,707.08

Finding the Fourth Proportional to 18,320.80, 27,489.96 and 12,707.08

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Solution

The fourth proportional to 18,320.80, 27,489.96 and 12,707.08 is: 19,066.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,320.80 : 27,489.96 = 12,707.08 : x
  2. Step 2: Convert to fraction form
    18,320.80/27,489.96 = 12,707.08/x
  3. Step 3: Cross multiply
    18,320.80x = 27,489.96 × 12,707.08
  4. Step 4: Simplify right side
    18,320.80x = 349,317,120.92
  5. Step 5: Solve for x
    x = 349,317,120.92/18,320.80
  6. Step 6: Final answer
    x = 19,066.70

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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.