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Finding the Fourth Proportional to 13,881.66, 20,803.05 and 7,297.98

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Solution

The fourth proportional to 13,881.66, 20,803.05 and 7,297.98 is: 10,936.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,881.66 : 20,803.05 = 7,297.98 : x
  2. Step 2: Convert to fraction form
    13,881.66/20,803.05 = 7,297.98/x
  3. Step 3: Cross multiply
    13,881.66x = 20,803.05 × 7,297.98
  4. Step 4: Simplify right side
    13,881.66x = 151,820,242.84
  5. Step 5: Solve for x
    x = 151,820,242.84/13,881.66
  6. Step 6: Final answer
    x = 10,936.75

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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.