Home / 12,287.26-18,430.80-5,709.79

Finding the Fourth Proportional to 12,287.26, 18,430.80 and 5,709.79

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Solution

The fourth proportional to 12,287.26, 18,430.80 and 5,709.79 is: 8,564.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,287.26 : 18,430.80 = 5,709.79 : x
  2. Step 2: Convert to fraction form
    12,287.26/18,430.80 = 5,709.79/x
  3. Step 3: Cross multiply
    12,287.26x = 18,430.80 × 5,709.79
  4. Step 4: Simplify right side
    12,287.26x = 105,235,997.53
  5. Step 5: Solve for x
    x = 105,235,997.53/12,287.26
  6. Step 6: Final answer
    x = 8,564.64

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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.