Home / 12,899.44-19,242.38-12,730.48

Finding the Fourth Proportional to 12,899.44, 19,242.38 and 12,730.48

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Solution

The fourth proportional to 12,899.44, 19,242.38 and 12,730.48 is: 18,990.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,899.44 : 19,242.38 = 12,730.48 : x
  2. Step 2: Convert to fraction form
    12,899.44/19,242.38 = 12,730.48/x
  3. Step 3: Cross multiply
    12,899.44x = 19,242.38 × 12,730.48
  4. Step 4: Simplify right side
    12,899.44x = 244,964,733.74
  5. Step 5: Solve for x
    x = 244,964,733.74/12,899.44
  6. Step 6: Final answer
    x = 18,990.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.