Home / 18,129.72-27,195.30-8,637.15

Finding the Fourth Proportional to 18,129.72, 27,195.30 and 8,637.15

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Solution

The fourth proportional to 18,129.72, 27,195.30 and 8,637.15 is: 12,956.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,129.72 : 27,195.30 = 8,637.15 : x
  2. Step 2: Convert to fraction form
    18,129.72/27,195.30 = 8,637.15/x
  3. Step 3: Cross multiply
    18,129.72x = 27,195.30 × 8,637.15
  4. Step 4: Simplify right side
    18,129.72x = 234,889,885.40
  5. Step 5: Solve for x
    x = 234,889,885.40/18,129.72
  6. Step 6: Final answer
    x = 12,956.07

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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.