Home / 13,632.05-20,348.62-11,971.28

Finding the Fourth Proportional to 13,632.05, 20,348.62 and 11,971.28

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Solution

The fourth proportional to 13,632.05, 20,348.62 and 11,971.28 is: 17,869.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,632.05 : 20,348.62 = 11,971.28 : x
  2. Step 2: Convert to fraction form
    13,632.05/20,348.62 = 11,971.28/x
  3. Step 3: Cross multiply
    13,632.05x = 20,348.62 × 11,971.28
  4. Step 4: Simplify right side
    13,632.05x = 243,599,048.58
  5. Step 5: Solve for x
    x = 243,599,048.58/13,632.05
  6. Step 6: Final answer
    x = 17,869.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.