Home / 14,003.20-21,004.80-12,472.30

Finding the Fourth Proportional to 14,003.20, 21,004.80 and 12,472.30

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Solution

The fourth proportional to 14,003.20, 21,004.80 and 12,472.30 is: 18,708.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,003.20 : 21,004.80 = 12,472.30 : x
  2. Step 2: Convert to fraction form
    14,003.20/21,004.80 = 12,472.30/x
  3. Step 3: Cross multiply
    14,003.20x = 21,004.80 × 12,472.30
  4. Step 4: Simplify right side
    14,003.20x = 261,978,167.04
  5. Step 5: Solve for x
    x = 261,978,167.04/14,003.20
  6. Step 6: Final answer
    x = 18,708.45

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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.