Home / 18,120.61-27,158.60-8,637.91

Finding the Fourth Proportional to 18,120.61, 27,158.60 and 8,637.91

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Solution

The fourth proportional to 18,120.61, 27,158.60 and 8,637.91 is: 12,946.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,120.61 : 27,158.60 = 8,637.91 : x
  2. Step 2: Convert to fraction form
    18,120.61/27,158.60 = 8,637.91/x
  3. Step 3: Cross multiply
    18,120.61x = 27,158.60 × 8,637.91
  4. Step 4: Simplify right side
    18,120.61x = 234,593,363.54
  5. Step 5: Solve for x
    x = 234,593,363.54/18,120.61
  6. Step 6: Final answer
    x = 12,946.22

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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.