Home / 15,388.08-21,236.71-8,674.34

Finding the Fourth Proportional to 15,388.08, 21,236.71 and 8,674.34

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Solution

The fourth proportional to 15,388.08, 21,236.71 and 8,674.34 is: 11,971.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,388.08 : 21,236.71 = 8,674.34 : x
  2. Step 2: Convert to fraction form
    15,388.08/21,236.71 = 8,674.34/x
  3. Step 3: Cross multiply
    15,388.08x = 21,236.71 × 8,674.34
  4. Step 4: Simplify right side
    15,388.08x = 184,214,336.84
  5. Step 5: Solve for x
    x = 184,214,336.84/15,388.08
  6. Step 6: Final answer
    x = 11,971.24

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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.