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Finding the Fourth Proportional to 14,571, 20,100.78 and 9,190.98

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Solution

The fourth proportional to 14,571, 20,100.78 and 9,190.98 is: 12,679.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,571 : 20,100.78 = 9,190.98 : x
  2. Step 2: Convert to fraction form
    14,571/20,100.78 = 9,190.98/x
  3. Step 3: Cross multiply
    14,571x = 20,100.78 × 9,190.98
  4. Step 4: Simplify right side
    14,571x = 184,745,866.96
  5. Step 5: Solve for x
    x = 184,745,866.96/14,571
  6. Step 6: Final answer
    x = 12,679.01

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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.