Home / 21,653.06-29,881.23-12,222.23

Finding the Fourth Proportional to 21,653.06, 29,881.23 and 12,222.23

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Solution

The fourth proportional to 21,653.06, 29,881.23 and 12,222.23 is: 16,866.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,653.06 : 29,881.23 = 12,222.23 : x
  2. Step 2: Convert to fraction form
    21,653.06/29,881.23 = 12,222.23/x
  3. Step 3: Cross multiply
    21,653.06x = 29,881.23 × 12,222.23
  4. Step 4: Simplify right side
    21,653.06x = 365,215,340.45
  5. Step 5: Solve for x
    x = 365,215,340.45/21,653.06
  6. Step 6: Final answer
    x = 16,866.68

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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.