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Finding the Fourth Proportional to 12,692.84, 19,011.53 and 5,274.80

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Solution

The fourth proportional to 12,692.84, 19,011.53 and 5,274.80 is: 7,900.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,692.84 : 19,011.53 = 5,274.80 : x
  2. Step 2: Convert to fraction form
    12,692.84/19,011.53 = 5,274.80/x
  3. Step 3: Cross multiply
    12,692.84x = 19,011.53 × 5,274.80
  4. Step 4: Simplify right side
    12,692.84x = 100,282,085.14
  5. Step 5: Solve for x
    x = 100,282,085.14/12,692.84
  6. Step 6: Final answer
    x = 7,900.68

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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.