Home / 30,351.24-45,531.72-12,821.22

Finding the Fourth Proportional to 30,351.24, 45,531.72 and 12,821.22

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Solution

The fourth proportional to 30,351.24, 45,531.72 and 12,821.22 is: 19,233.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,351.24 : 45,531.72 = 12,821.22 : x
  2. Step 2: Convert to fraction form
    30,351.24/45,531.72 = 12,821.22/x
  3. Step 3: Cross multiply
    30,351.24x = 45,531.72 × 12,821.22
  4. Step 4: Simplify right side
    30,351.24x = 583,772,199.10
  5. Step 5: Solve for x
    x = 583,772,199.10/30,351.24
  6. Step 6: Final answer
    x = 19,233.88

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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.