Home / 30,215.29-45,311.11-11,485.39

Finding the Fourth Proportional to 30,215.29, 45,311.11 and 11,485.39

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Solution

The fourth proportional to 30,215.29, 45,311.11 and 11,485.39 is: 17,223.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,215.29 : 45,311.11 = 11,485.39 : x
  2. Step 2: Convert to fraction form
    30,215.29/45,311.11 = 11,485.39/x
  3. Step 3: Cross multiply
    30,215.29x = 45,311.11 × 11,485.39
  4. Step 4: Simplify right side
    30,215.29x = 520,415,769.68
  5. Step 5: Solve for x
    x = 520,415,769.68/30,215.29
  6. Step 6: Final answer
    x = 17,223.59

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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.