Home / 13,188.72-18,192.24-8,154.48

Finding the Fourth Proportional to 13,188.72, 18,192.24 and 8,154.48

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Solution

The fourth proportional to 13,188.72, 18,192.24 and 8,154.48 is: 11,248.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,188.72 : 18,192.24 = 8,154.48 : x
  2. Step 2: Convert to fraction form
    13,188.72/18,192.24 = 8,154.48/x
  3. Step 3: Cross multiply
    13,188.72x = 18,192.24 × 8,154.48
  4. Step 4: Simplify right side
    13,188.72x = 148,348,257.24
  5. Step 5: Solve for x
    x = 148,348,257.24/13,188.72
  6. Step 6: Final answer
    x = 11,248.12

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1.5x scale

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.