Home / 20,663.98-28,506.27-12,274.54

Finding the Fourth Proportional to 20,663.98, 28,506.27 and 12,274.54

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Solution

The fourth proportional to 20,663.98, 28,506.27 and 12,274.54 is: 16,932.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,663.98 : 28,506.27 = 12,274.54 : x
  2. Step 2: Convert to fraction form
    20,663.98/28,506.27 = 12,274.54/x
  3. Step 3: Cross multiply
    20,663.98x = 28,506.27 × 12,274.54
  4. Step 4: Simplify right side
    20,663.98x = 349,901,351.37
  5. Step 5: Solve for x
    x = 349,901,351.37/20,663.98
  6. Step 6: Final answer
    x = 16,932.91

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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.