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Finding the Fourth Proportional to 18,770.70, 25,903.64 and 12,056.39

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Solution

The fourth proportional to 18,770.70, 25,903.64 and 12,056.39 is: 16,637.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,770.70 : 25,903.64 = 12,056.39 : x
  2. Step 2: Convert to fraction form
    18,770.70/25,903.64 = 12,056.39/x
  3. Step 3: Cross multiply
    18,770.70x = 25,903.64 × 12,056.39
  4. Step 4: Simplify right side
    18,770.70x = 312,304,304.19
  5. Step 5: Solve for x
    x = 312,304,304.19/18,770.70
  6. Step 6: Final answer
    x = 16,637.86

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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.