Home / 15,835.12-21,852.60-8,664.88

Finding the Fourth Proportional to 15,835.12, 21,852.60 and 8,664.88

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Solution

The fourth proportional to 15,835.12, 21,852.60 and 8,664.88 is: 11,957.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,835.12 : 21,852.60 = 8,664.88 : x
  2. Step 2: Convert to fraction form
    15,835.12/21,852.60 = 8,664.88/x
  3. Step 3: Cross multiply
    15,835.12x = 21,852.60 × 8,664.88
  4. Step 4: Simplify right side
    15,835.12x = 189,350,156.69
  5. Step 5: Solve for x
    x = 189,350,156.69/15,835.12
  6. Step 6: Final answer
    x = 11,957.61

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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.