Home / 14,190.50-21,304.59-12,123.78

Finding the Fourth Proportional to 14,190.50, 21,304.59 and 12,123.78

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Solution

The fourth proportional to 14,190.50, 21,304.59 and 12,123.78 is: 18,201.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,190.50 : 21,304.59 = 12,123.78 : x
  2. Step 2: Convert to fraction form
    14,190.50/21,304.59 = 12,123.78/x
  3. Step 3: Cross multiply
    14,190.50x = 21,304.59 × 12,123.78
  4. Step 4: Simplify right side
    14,190.50x = 258,292,162.15
  5. Step 5: Solve for x
    x = 258,292,162.15/14,190.50
  6. Step 6: Final answer
    x = 18,201.77

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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.