Home / 30,540.60-42,146.50-18,604.44

Finding the Fourth Proportional to 30,540.60, 42,146.50 and 18,604.44

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Solution

The fourth proportional to 30,540.60, 42,146.50 and 18,604.44 is: 25,674.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,540.60 : 42,146.50 = 18,604.44 : x
  2. Step 2: Convert to fraction form
    30,540.60/42,146.50 = 18,604.44/x
  3. Step 3: Cross multiply
    30,540.60x = 42,146.50 × 18,604.44
  4. Step 4: Simplify right side
    30,540.60x = 784,112,030.46
  5. Step 5: Solve for x
    x = 784,112,030.46/30,540.60
  6. Step 6: Final answer
    x = 25,674.41

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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.