Home / 28,116.16-42,181.58-8,394.72

Finding the Fourth Proportional to 28,116.16, 42,181.58 and 8,394.72

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Solution

The fourth proportional to 28,116.16, 42,181.58 and 8,394.72 is: 12,594.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,116.16 : 42,181.58 = 8,394.72 : x
  2. Step 2: Convert to fraction form
    28,116.16/42,181.58 = 8,394.72/x
  3. Step 3: Cross multiply
    28,116.16x = 42,181.58 × 8,394.72
  4. Step 4: Simplify right side
    28,116.16x = 354,102,553.26
  5. Step 5: Solve for x
    x = 354,102,553.26/28,116.16
  6. Step 6: Final answer
    x = 12,594.27

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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.