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Finding the Fourth Proportional to 18,602.60, 25,672.40 and 10,644.80

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Solution

The fourth proportional to 18,602.60, 25,672.40 and 10,644.80 is: 14,690.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,602.60 : 25,672.40 = 10,644.80 : x
  2. Step 2: Convert to fraction form
    18,602.60/25,672.40 = 10,644.80/x
  3. Step 3: Cross multiply
    18,602.60x = 25,672.40 × 10,644.80
  4. Step 4: Simplify right side
    18,602.60x = 273,277,563.52
  5. Step 5: Solve for x
    x = 273,277,563.52/18,602.60
  6. Step 6: Final answer
    x = 14,690.29

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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.