Home / 12,138.92-18,210.42-5,910.02

Finding the Fourth Proportional to 12,138.92, 18,210.42 and 5,910.02

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Solution

The fourth proportional to 12,138.92, 18,210.42 and 5,910.02 is: 8,866.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,138.92 : 18,210.42 = 5,910.02 : x
  2. Step 2: Convert to fraction form
    12,138.92/18,210.42 = 5,910.02/x
  3. Step 3: Cross multiply
    12,138.92x = 18,210.42 × 5,910.02
  4. Step 4: Simplify right side
    12,138.92x = 107,623,946.41
  5. Step 5: Solve for x
    x = 107,623,946.41/12,138.92
  6. Step 6: Final answer
    x = 8,866.02

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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.