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Finding the Fourth Proportional to 14,692.91, 20,290.50 and 12,555.86

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Solution

The fourth proportional to 14,692.91, 20,290.50 and 12,555.86 is: 17,339.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,692.91 : 20,290.50 = 12,555.86 : x
  2. Step 2: Convert to fraction form
    14,692.91/20,290.50 = 12,555.86/x
  3. Step 3: Cross multiply
    14,692.91x = 20,290.50 × 12,555.86
  4. Step 4: Simplify right side
    14,692.91x = 254,764,575.88
  5. Step 5: Solve for x
    x = 254,764,575.88/14,692.91
  6. Step 6: Final answer
    x = 17,339.29

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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.