Home / 15,398.64-21,249.69-8,684.22

Finding the Fourth Proportional to 15,398.64, 21,249.69 and 8,684.22

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Solution

The fourth proportional to 15,398.64, 21,249.69 and 8,684.22 is: 11,983.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,398.64 : 21,249.69 = 8,684.22 : x
  2. Step 2: Convert to fraction form
    15,398.64/21,249.69 = 8,684.22/x
  3. Step 3: Cross multiply
    15,398.64x = 21,249.69 × 8,684.22
  4. Step 4: Simplify right side
    15,398.64x = 184,536,982.89
  5. Step 5: Solve for x
    x = 184,536,982.89/15,398.64
  6. Step 6: Final answer
    x = 11,983.98

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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.