Home / 12,113.76-18,156.24-7,187.04

Finding the Fourth Proportional to 12,113.76, 18,156.24 and 7,187.04

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Solution

The fourth proportional to 12,113.76, 18,156.24 and 7,187.04 is: 10,772.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,113.76 : 18,156.24 = 7,187.04 : x
  2. Step 2: Convert to fraction form
    12,113.76/18,156.24 = 7,187.04/x
  3. Step 3: Cross multiply
    12,113.76x = 18,156.24 × 7,187.04
  4. Step 4: Simplify right side
    12,113.76x = 130,489,623.13
  5. Step 5: Solve for x
    x = 130,489,623.13/12,113.76
  6. Step 6: Final answer
    x = 10,772.02

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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.