Home / 12,818.16-19,236.96-8,648.28

Finding the Fourth Proportional to 12,818.16, 19,236.96 and 8,648.28

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Solution

The fourth proportional to 12,818.16, 19,236.96 and 8,648.28 is: 12,978.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,818.16 : 19,236.96 = 8,648.28 : x
  2. Step 2: Convert to fraction form
    12,818.16/19,236.96 = 8,648.28/x
  3. Step 3: Cross multiply
    12,818.16x = 19,236.96 × 8,648.28
  4. Step 4: Simplify right side
    12,818.16x = 166,366,616.43
  5. Step 5: Solve for x
    x = 166,366,616.43/12,818.16
  6. Step 6: Final answer
    x = 12,978.98

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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.