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Finding the Fourth Proportional to 16,391.74, 24,575.01 and 8,485.78

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Solution

The fourth proportional to 16,391.74, 24,575.01 and 8,485.78 is: 12,722.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,391.74 : 24,575.01 = 8,485.78 : x
  2. Step 2: Convert to fraction form
    16,391.74/24,575.01 = 8,485.78/x
  3. Step 3: Cross multiply
    16,391.74x = 24,575.01 × 8,485.78
  4. Step 4: Simplify right side
    16,391.74x = 208,538,128.36
  5. Step 5: Solve for x
    x = 208,538,128.36/16,391.74
  6. Step 6: Final answer
    x = 12,722.15

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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.