Home / 12,892.20-19,280.70-10,818.60

Finding the Fourth Proportional to 12,892.20, 19,280.70 and 10,818.60

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Solution

The fourth proportional to 12,892.20, 19,280.70 and 10,818.60 is: 16,179.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,892.20 : 19,280.70 = 10,818.60 : x
  2. Step 2: Convert to fraction form
    12,892.20/19,280.70 = 10,818.60/x
  3. Step 3: Cross multiply
    12,892.20x = 19,280.70 × 10,818.60
  4. Step 4: Simplify right side
    12,892.20x = 208,590,181.02
  5. Step 5: Solve for x
    x = 208,590,181.02/12,892.20
  6. Step 6: Final answer
    x = 16,179.56

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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.