Home / 15,840.94-21,859.29-8,669.25

Finding the Fourth Proportional to 15,840.94, 21,859.29 and 8,669.25

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Solution

The fourth proportional to 15,840.94, 21,859.29 and 8,669.25 is: 11,962.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,840.94 : 21,859.29 = 8,669.25 : x
  2. Step 2: Convert to fraction form
    15,840.94/21,859.29 = 8,669.25/x
  3. Step 3: Cross multiply
    15,840.94x = 21,859.29 × 8,669.25
  4. Step 4: Simplify right side
    15,840.94x = 189,503,735.69
  5. Step 5: Solve for x
    x = 189,503,735.69/15,840.94
  6. Step 6: Final answer
    x = 11,962.91

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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.