Home / 30,205.80-45,302.50-11,479.28

Finding the Fourth Proportional to 30,205.80, 45,302.50 and 11,479.28

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Solution

The fourth proportional to 30,205.80, 45,302.50 and 11,479.28 is: 17,216.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,205.80 : 45,302.50 = 11,479.28 : x
  2. Step 2: Convert to fraction form
    30,205.80/45,302.50 = 11,479.28/x
  3. Step 3: Cross multiply
    30,205.80x = 45,302.50 × 11,479.28
  4. Step 4: Simplify right side
    30,205.80x = 520,040,082.20
  5. Step 5: Solve for x
    x = 520,040,082.20/30,205.80
  6. Step 6: Final answer
    x = 17,216.56

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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.