Home / 30,305.34-45,331.41-21,298.82

Finding the Fourth Proportional to 30,305.34, 45,331.41 and 21,298.82

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Solution

The fourth proportional to 30,305.34, 45,331.41 and 21,298.82 is: 31,859.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,305.34 : 45,331.41 = 21,298.82 : x
  2. Step 2: Convert to fraction form
    30,305.34/45,331.41 = 21,298.82/x
  3. Step 3: Cross multiply
    30,305.34x = 45,331.41 × 21,298.82
  4. Step 4: Simplify right side
    30,305.34x = 965,505,575.39
  5. Step 5: Solve for x
    x = 965,505,575.39/30,305.34
  6. Step 6: Final answer
    x = 31,859.26

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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.