Home / 28,446.74-42,662.20-8,460.60

Finding the Fourth Proportional to 28,446.74, 42,662.20 and 8,460.60

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Solution

The fourth proportional to 28,446.74, 42,662.20 and 8,460.60 is: 12,688.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,446.74 : 42,662.20 = 8,460.60 : x
  2. Step 2: Convert to fraction form
    28,446.74/42,662.20 = 8,460.60/x
  3. Step 3: Cross multiply
    28,446.74x = 42,662.20 × 8,460.60
  4. Step 4: Simplify right side
    28,446.74x = 360,947,809.32
  5. Step 5: Solve for x
    x = 360,947,809.32/28,446.74
  6. Step 6: Final answer
    x = 12,688.55

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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.