Home / 18,436.19-27,615.40-12,516.71

Finding the Fourth Proportional to 18,436.19, 27,615.40 and 12,516.71

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Solution

The fourth proportional to 18,436.19, 27,615.40 and 12,516.71 is: 18,748.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,436.19 : 27,615.40 = 12,516.71 : x
  2. Step 2: Convert to fraction form
    18,436.19/27,615.40 = 12,516.71/x
  3. Step 3: Cross multiply
    18,436.19x = 27,615.40 × 12,516.71
  4. Step 4: Simplify right side
    18,436.19x = 345,653,783.97
  5. Step 5: Solve for x
    x = 345,653,783.97/18,436.19
  6. Step 6: Final answer
    x = 18,748.66

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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.