Home / 15,500.88-21,391.43-8,427.29

Finding the Fourth Proportional to 15,500.88, 21,391.43 and 8,427.29

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Solution

The fourth proportional to 15,500.88, 21,391.43 and 8,427.29 is: 11,629.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,500.88 : 21,391.43 = 8,427.29 : x
  2. Step 2: Convert to fraction form
    15,500.88/21,391.43 = 8,427.29/x
  3. Step 3: Cross multiply
    15,500.88x = 21,391.43 × 8,427.29
  4. Step 4: Simplify right side
    15,500.88x = 180,271,635.03
  5. Step 5: Solve for x
    x = 180,271,635.03/15,500.88
  6. Step 6: Final answer
    x = 11,629.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.