Home / 18,430.07-27,628.72-7,182.80

Finding the Fourth Proportional to 18,430.07, 27,628.72 and 7,182.80

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Solution

The fourth proportional to 18,430.07, 27,628.72 and 7,182.80 is: 10,767.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,430.07 : 27,628.72 = 7,182.80 : x
  2. Step 2: Convert to fraction form
    18,430.07/27,628.72 = 7,182.80/x
  3. Step 3: Cross multiply
    18,430.07x = 27,628.72 × 7,182.80
  4. Step 4: Simplify right side
    18,430.07x = 198,451,570.02
  5. Step 5: Solve for x
    x = 198,451,570.02/18,430.07
  6. Step 6: Final answer
    x = 10,767.81

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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.