Home / 13,632.09-18,812.30-7,663.74

Finding the Fourth Proportional to 13,632.09, 18,812.30 and 7,663.74

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Solution

The fourth proportional to 13,632.09, 18,812.30 and 7,663.74 is: 10,575.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,632.09 : 18,812.30 = 7,663.74 : x
  2. Step 2: Convert to fraction form
    13,632.09/18,812.30 = 7,663.74/x
  3. Step 3: Cross multiply
    13,632.09x = 18,812.30 × 7,663.74
  4. Step 4: Simplify right side
    13,632.09x = 144,172,537.68
  5. Step 5: Solve for x
    x = 144,172,537.68/13,632.09
  6. Step 6: Final answer
    x = 10,575.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.