Home / 30,008.97-45,011.30-13,143.69

Finding the Fourth Proportional to 30,008.97, 45,011.30 and 13,143.69

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Solution

The fourth proportional to 30,008.97, 45,011.30 and 13,143.69 is: 19,714.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,008.97 : 45,011.30 = 13,143.69 : x
  2. Step 2: Convert to fraction form
    30,008.97/45,011.30 = 13,143.69/x
  3. Step 3: Cross multiply
    30,008.97x = 45,011.30 × 13,143.69
  4. Step 4: Simplify right side
    30,008.97x = 591,614,507.98
  5. Step 5: Solve for x
    x = 591,614,507.98/30,008.97
  6. Step 6: Final answer
    x = 19,714.59

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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.