Home / 15,922.12-21,922.18-12,133.12

Finding the Fourth Proportional to 15,922.12, 21,922.18 and 12,133.12

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Solution

The fourth proportional to 15,922.12, 21,922.18 and 12,133.12 is: 16,705.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,922.12 : 21,922.18 = 12,133.12 : x
  2. Step 2: Convert to fraction form
    15,922.12/21,922.18 = 12,133.12/x
  3. Step 3: Cross multiply
    15,922.12x = 21,922.18 × 12,133.12
  4. Step 4: Simplify right side
    15,922.12x = 265,984,440.60
  5. Step 5: Solve for x
    x = 265,984,440.60/15,922.12
  6. Step 6: Final answer
    x = 16,705.34

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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.