Home / 30,008.72-45,010.92-13,143.44

Finding the Fourth Proportional to 30,008.72, 45,010.92 and 13,143.44

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Solution

The fourth proportional to 30,008.72, 45,010.92 and 13,143.44 is: 19,714.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,008.72 : 45,010.92 = 13,143.44 : x
  2. Step 2: Convert to fraction form
    30,008.72/45,010.92 = 13,143.44/x
  3. Step 3: Cross multiply
    30,008.72x = 45,010.92 × 13,143.44
  4. Step 4: Simplify right side
    30,008.72x = 591,598,326.36
  5. Step 5: Solve for x
    x = 591,598,326.36/30,008.72
  6. Step 6: Final answer
    x = 19,714.21

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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.