Home / 30,131.34-45,203.61-11,411.51

Finding the Fourth Proportional to 30,131.34, 45,203.61 and 11,411.51

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Solution

The fourth proportional to 30,131.34, 45,203.61 and 11,411.51 is: 17,119.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,131.34 : 45,203.61 = 11,411.51 : x
  2. Step 2: Convert to fraction form
    30,131.34/45,203.61 = 11,411.51/x
  3. Step 3: Cross multiply
    30,131.34x = 45,203.61 × 11,411.51
  4. Step 4: Simplify right side
    30,131.34x = 515,841,264.33
  5. Step 5: Solve for x
    x = 515,841,264.33/30,131.34
  6. Step 6: Final answer
    x = 17,119.76

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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.