Home / 21,447.18-29,597.40-12,015.54

Finding the Fourth Proportional to 21,447.18, 29,597.40 and 12,015.54

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Solution

The fourth proportional to 21,447.18, 29,597.40 and 12,015.54 is: 16,581.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,447.18 : 29,597.40 = 12,015.54 : x
  2. Step 2: Convert to fraction form
    21,447.18/29,597.40 = 12,015.54/x
  3. Step 3: Cross multiply
    21,447.18x = 29,597.40 × 12,015.54
  4. Step 4: Simplify right side
    21,447.18x = 355,628,743.60
  5. Step 5: Solve for x
    x = 355,628,743.60/21,447.18
  6. Step 6: Final answer
    x = 16,581.61

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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.