Home / 30,154.10-45,231.15-28,874.30

Finding the Fourth Proportional to 30,154.10, 45,231.15 and 28,874.30

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Solution

The fourth proportional to 30,154.10, 45,231.15 and 28,874.30 is: 43,311.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,154.10 : 45,231.15 = 28,874.30 : x
  2. Step 2: Convert to fraction form
    30,154.10/45,231.15 = 28,874.30/x
  3. Step 3: Cross multiply
    30,154.10x = 45,231.15 × 28,874.30
  4. Step 4: Simplify right side
    30,154.10x = 1,306,017,794.45
  5. Step 5: Solve for x
    x = 1,306,017,794.45/30,154.10
  6. Step 6: Final answer
    x = 43,311.45

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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.