Home / 28,911.40-43,367.10-11,372.20

Finding the Fourth Proportional to 28,911.40, 43,367.10 and 11,372.20

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Solution

The fourth proportional to 28,911.40, 43,367.10 and 11,372.20 is: 17,058.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,911.40 : 43,367.10 = 11,372.20 : x
  2. Step 2: Convert to fraction form
    28,911.40/43,367.10 = 11,372.20/x
  3. Step 3: Cross multiply
    28,911.40x = 43,367.10 × 11,372.20
  4. Step 4: Simplify right side
    28,911.40x = 493,179,334.62
  5. Step 5: Solve for x
    x = 493,179,334.62/28,911.40
  6. Step 6: Final answer
    x = 17,058.30

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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.