Home / 15,500.44-21,390.68-8,426.84

Finding the Fourth Proportional to 15,500.44, 21,390.68 and 8,426.84

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Solution

The fourth proportional to 15,500.44, 21,390.68 and 8,426.84 is: 11,629.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,500.44 : 21,390.68 = 8,426.84 : x
  2. Step 2: Convert to fraction form
    15,500.44/21,390.68 = 8,426.84/x
  3. Step 3: Cross multiply
    15,500.44x = 21,390.68 × 8,426.84
  4. Step 4: Simplify right side
    15,500.44x = 180,255,837.85
  5. Step 5: Solve for x
    x = 180,255,837.85/15,500.44
  6. Step 6: Final answer
    x = 11,629.08

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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.