Home / 30,553.20-45,742.32-18,787.14

Finding the Fourth Proportional to 30,553.20, 45,742.32 and 18,787.14

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Solution

The fourth proportional to 30,553.20, 45,742.32 and 18,787.14 is: 28,126.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,553.20 : 45,742.32 = 18,787.14 : x
  2. Step 2: Convert to fraction form
    30,553.20/45,742.32 = 18,787.14/x
  3. Step 3: Cross multiply
    30,553.20x = 45,742.32 × 18,787.14
  4. Step 4: Simplify right side
    30,553.20x = 859,367,369.76
  5. Step 5: Solve for x
    x = 859,367,369.76/30,553.20
  6. Step 6: Final answer
    x = 28,126.92

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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.