Home / 21,336.58-29,448.08-12,391.57

Finding the Fourth Proportional to 21,336.58, 29,448.08 and 12,391.57

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Solution

The fourth proportional to 21,336.58, 29,448.08 and 12,391.57 is: 17,102.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,336.58 : 29,448.08 = 12,391.57 : x
  2. Step 2: Convert to fraction form
    21,336.58/29,448.08 = 12,391.57/x
  3. Step 3: Cross multiply
    21,336.58x = 29,448.08 × 12,391.57
  4. Step 4: Simplify right side
    21,336.58x = 364,907,944.69
  5. Step 5: Solve for x
    x = 364,907,944.69/21,336.58
  6. Step 6: Final answer
    x = 17,102.46

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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.