Home / 21,808.44-30,095.34-12,856.32

Finding the Fourth Proportional to 21,808.44, 30,095.34 and 12,856.32

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Solution

The fourth proportional to 21,808.44, 30,095.34 and 12,856.32 is: 17,741.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,808.44 : 30,095.34 = 12,856.32 : x
  2. Step 2: Convert to fraction form
    21,808.44/30,095.34 = 12,856.32/x
  3. Step 3: Cross multiply
    21,808.44x = 30,095.34 × 12,856.32
  4. Step 4: Simplify right side
    21,808.44x = 386,915,321.55
  5. Step 5: Solve for x
    x = 386,915,321.55/21,808.44
  6. Step 6: Final answer
    x = 17,741.54

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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.