Home / 21,200.96-29,258.34-12,249.65

Finding the Fourth Proportional to 21,200.96, 29,258.34 and 12,249.65

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Solution

The fourth proportional to 21,200.96, 29,258.34 and 12,249.65 is: 16,905.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,200.96 : 29,258.34 = 12,249.65 : x
  2. Step 2: Convert to fraction form
    21,200.96/29,258.34 = 12,249.65/x
  3. Step 3: Cross multiply
    21,200.96x = 29,258.34 × 12,249.65
  4. Step 4: Simplify right side
    21,200.96x = 358,404,424.58
  5. Step 5: Solve for x
    x = 358,404,424.58/21,200.96
  6. Step 6: Final answer
    x = 16,905.10

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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.