Home / 18,718.60-25,823.39-12,666.69

Finding the Fourth Proportional to 18,718.60, 25,823.39 and 12,666.69

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Solution

The fourth proportional to 18,718.60, 25,823.39 and 12,666.69 is: 17,474.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,718.60 : 25,823.39 = 12,666.69 : x
  2. Step 2: Convert to fraction form
    18,718.60/25,823.39 = 12,666.69/x
  3. Step 3: Cross multiply
    18,718.60x = 25,823.39 × 12,666.69
  4. Step 4: Simplify right side
    18,718.60x = 327,096,683.43
  5. Step 5: Solve for x
    x = 327,096,683.43/18,718.60
  6. Step 6: Final answer
    x = 17,474.42

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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.