Home / 30,291.22-45,401.28-13,631.77

Finding the Fourth Proportional to 30,291.22, 45,401.28 and 13,631.77

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Solution

The fourth proportional to 30,291.22, 45,401.28 and 13,631.77 is: 20,431.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,291.22 : 45,401.28 = 13,631.77 : x
  2. Step 2: Convert to fraction form
    30,291.22/45,401.28 = 13,631.77/x
  3. Step 3: Cross multiply
    30,291.22x = 45,401.28 × 13,631.77
  4. Step 4: Simplify right side
    30,291.22x = 618,899,806.67
  5. Step 5: Solve for x
    x = 618,899,806.67/30,291.22
  6. Step 6: Final answer
    x = 20,431.66

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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.