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Finding the Fourth Proportional to 15,149.80, 22,692.30 and 12,557.80

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Solution

The fourth proportional to 15,149.80, 22,692.30 and 12,557.80 is: 18,809.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,149.80 : 22,692.30 = 12,557.80 : x
  2. Step 2: Convert to fraction form
    15,149.80/22,692.30 = 12,557.80/x
  3. Step 3: Cross multiply
    15,149.80x = 22,692.30 × 12,557.80
  4. Step 4: Simplify right side
    15,149.80x = 284,965,364.94
  5. Step 5: Solve for x
    x = 284,965,364.94/15,149.80
  6. Step 6: Final answer
    x = 18,809.84

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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.