Home / 30,126.78-41,558.13-18,798.12

Finding the Fourth Proportional to 30,126.78, 41,558.13 and 18,798.12

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Solution

The fourth proportional to 30,126.78, 41,558.13 and 18,798.12 is: 25,930.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,126.78 : 41,558.13 = 18,798.12 : x
  2. Step 2: Convert to fraction form
    30,126.78/41,558.13 = 18,798.12/x
  3. Step 3: Cross multiply
    30,126.78x = 41,558.13 × 18,798.12
  4. Step 4: Simplify right side
    30,126.78x = 781,214,714.72
  5. Step 5: Solve for x
    x = 781,214,714.72/30,126.78
  6. Step 6: Final answer
    x = 25,930.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.