Home / 18,299.81-27,428.52-8,418.35

Finding the Fourth Proportional to 18,299.81, 27,428.52 and 8,418.35

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Solution

The fourth proportional to 18,299.81, 27,428.52 and 8,418.35 is: 12,617.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,299.81 : 27,428.52 = 8,418.35 : x
  2. Step 2: Convert to fraction form
    18,299.81/27,428.52 = 8,418.35/x
  3. Step 3: Cross multiply
    18,299.81x = 27,428.52 × 8,418.35
  4. Step 4: Simplify right side
    18,299.81x = 230,902,827.20
  5. Step 5: Solve for x
    x = 230,902,827.20/18,299.81
  6. Step 6: Final answer
    x = 12,617.77

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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.