Home / 15,500.94-21,391.32-8,427.34

Finding the Fourth Proportional to 15,500.94, 21,391.32 and 8,427.34

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Solution

The fourth proportional to 15,500.94, 21,391.32 and 8,427.34 is: 11,629.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,500.94 : 21,391.32 = 8,427.34 : x
  2. Step 2: Convert to fraction form
    15,500.94/21,391.32 = 8,427.34/x
  3. Step 3: Cross multiply
    15,500.94x = 21,391.32 × 8,427.34
  4. Step 4: Simplify right side
    15,500.94x = 180,271,926.69
  5. Step 5: Solve for x
    x = 180,271,926.69/15,500.94
  6. Step 6: Final answer
    x = 11,629.74

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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.