Home / 30,001.82-45,010.91-13,131.76

Finding the Fourth Proportional to 30,001.82, 45,010.91 and 13,131.76

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Solution

The fourth proportional to 30,001.82, 45,010.91 and 13,131.76 is: 19,701.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,001.82 : 45,010.91 = 13,131.76 : x
  2. Step 2: Convert to fraction form
    30,001.82/45,010.91 = 13,131.76/x
  3. Step 3: Cross multiply
    30,001.82x = 45,010.91 × 13,131.76
  4. Step 4: Simplify right side
    30,001.82x = 591,072,467.50
  5. Step 5: Solve for x
    x = 591,072,467.50/30,001.82
  6. Step 6: Final answer
    x = 19,701.22

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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.