Home / 18,668.07-27,991.76-7,412.00

Finding the Fourth Proportional to 18,668.07, 27,991.76 and 7,412.00

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Solution

The fourth proportional to 18,668.07, 27,991.76 and 7,412.00 is: 11,113.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,668.07 : 27,991.76 = 7,412.00 : x
  2. Step 2: Convert to fraction form
    18,668.07/27,991.76 = 7,412.00/x
  3. Step 3: Cross multiply
    18,668.07x = 27,991.76 × 7,412.00
  4. Step 4: Simplify right side
    18,668.07x = 207,474,748.10
  5. Step 5: Solve for x
    x = 207,474,748.10/18,668.07
  6. Step 6: Final answer
    x = 11,113.88

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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.