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Finding the Fourth Proportional to 18,103.50, 24,955.49 and 15,572.05

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Solution

The fourth proportional to 18,103.50, 24,955.49 and 15,572.05 is: 21,465.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,103.50 : 24,955.49 = 15,572.05 : x
  2. Step 2: Convert to fraction form
    18,103.50/24,955.49 = 15,572.05/x
  3. Step 3: Cross multiply
    18,103.50x = 24,955.49 × 15,572.05
  4. Step 4: Simplify right side
    18,103.50x = 388,608,114.60
  5. Step 5: Solve for x
    x = 388,608,114.60/18,103.50
  6. Step 6: Final answer
    x = 21,465.91

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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.