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Finding the Fourth Proportional to 14,571.40, 21,840.90 and 8,002.30

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Solution

The fourth proportional to 14,571.40, 21,840.90 and 8,002.30 is: 11,994.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,571.40 : 21,840.90 = 8,002.30 : x
  2. Step 2: Convert to fraction form
    14,571.40/21,840.90 = 8,002.30/x
  3. Step 3: Cross multiply
    14,571.40x = 21,840.90 × 8,002.30
  4. Step 4: Simplify right side
    14,571.40x = 174,777,434.07
  5. Step 5: Solve for x
    x = 174,777,434.07/14,571.40
  6. Step 6: Final answer
    x = 11,994.55

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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.