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Finding the Fourth Proportional to 18,683.40, 28,025.10 and 17,257.80

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Solution

The fourth proportional to 18,683.40, 28,025.10 and 17,257.80 is: 25,886.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,683.40 : 28,025.10 = 17,257.80 : x
  2. Step 2: Convert to fraction form
    18,683.40/28,025.10 = 17,257.80/x
  3. Step 3: Cross multiply
    18,683.40x = 28,025.10 × 17,257.80
  4. Step 4: Simplify right side
    18,683.40x = 483,651,570.78
  5. Step 5: Solve for x
    x = 483,651,570.78/18,683.40
  6. Step 6: Final answer
    x = 25,886.70

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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.