Home / 28,135.12-42,211.14-8,414.32

Finding the Fourth Proportional to 28,135.12, 42,211.14 and 8,414.32

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Solution

The fourth proportional to 28,135.12, 42,211.14 and 8,414.32 is: 12,624.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,135.12 : 42,211.14 = 8,414.32 : x
  2. Step 2: Convert to fraction form
    28,135.12/42,211.14 = 8,414.32/x
  3. Step 3: Cross multiply
    28,135.12x = 42,211.14 × 8,414.32
  4. Step 4: Simplify right side
    28,135.12x = 355,178,039.52
  5. Step 5: Solve for x
    x = 355,178,039.52/28,135.12
  6. Step 6: Final answer
    x = 12,624.01

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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.