Home / 12,880,005.40-19,320,008.10-9,667,739.80

Finding the Fourth Proportional to 12,880,005.40, 19,320,008.10 and 9,667,739.80

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Solution

The fourth proportional to 12,880,005.40, 19,320,008.10 and 9,667,739.80 is: 14,501,609.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,880,005.40 : 19,320,008.10 = 9,667,739.80 : x
  2. Step 2: Convert to fraction form
    12,880,005.40/19,320,008.10 = 9,667,739.80/x
  3. Step 3: Cross multiply
    12,880,005.40x = 19,320,008.10 × 9,667,739.80
  4. Step 4: Simplify right side
    12,880,005.40x = 186,780,811,244,692.41
  5. Step 5: Solve for x
    x = 186,780,811,244,692.41/12,880,005.40
  6. Step 6: Final answer
    x = 14,501,609.70

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Similar ratio
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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.