Home / 20,443.50-28,212.64-12,060

Finding the Fourth Proportional to 20,443.50, 28,212.64 and 12,060

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Solution

The fourth proportional to 20,443.50, 28,212.64 and 12,060 is: 16,643.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,443.50 : 28,212.64 = 12,060 : x
  2. Step 2: Convert to fraction form
    20,443.50/28,212.64 = 12,060/x
  3. Step 3: Cross multiply
    20,443.50x = 28,212.64 × 12,060
  4. Step 4: Simplify right side
    20,443.50x = 340,244,408.25
  5. Step 5: Solve for x
    x = 340,244,408.25/20,443.50
  6. Step 6: Final answer
    x = 16,643.16

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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.