Home / 15,398.37-21,249.45-8,683.88

Finding the Fourth Proportional to 15,398.37, 21,249.45 and 8,683.88

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Solution

The fourth proportional to 15,398.37, 21,249.45 and 8,683.88 is: 11,983.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,398.37 : 21,249.45 = 8,683.88 : x
  2. Step 2: Convert to fraction form
    15,398.37/21,249.45 = 8,683.88/x
  3. Step 3: Cross multiply
    15,398.37x = 21,249.45 × 8,683.88
  4. Step 4: Simplify right side
    15,398.37x = 184,527,567.62
  5. Step 5: Solve for x
    x = 184,527,567.62/15,398.37
  6. Step 6: Final answer
    x = 11,983.58

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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.