Home / 20,324.89-28,048.34-11,374.49

Finding the Fourth Proportional to 20,324.89, 28,048.34 and 11,374.49

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Solution

The fourth proportional to 20,324.89, 28,048.34 and 11,374.49 is: 15,696.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,324.89 : 28,048.34 = 11,374.49 : x
  2. Step 2: Convert to fraction form
    20,324.89/28,048.34 = 11,374.49/x
  3. Step 3: Cross multiply
    20,324.89x = 28,048.34 × 11,374.49
  4. Step 4: Simplify right side
    20,324.89x = 319,035,661.40
  5. Step 5: Solve for x
    x = 319,035,661.40/20,324.89
  6. Step 6: Final answer
    x = 15,696.80

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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.