Home / 21,683.56-29,922.68-12,123.46

Finding the Fourth Proportional to 21,683.56, 29,922.68 and 12,123.46

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Solution

The fourth proportional to 21,683.56, 29,922.68 and 12,123.46 is: 16,730.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,683.56 : 29,922.68 = 12,123.46 : x
  2. Step 2: Convert to fraction form
    21,683.56/29,922.68 = 12,123.46/x
  3. Step 3: Cross multiply
    21,683.56x = 29,922.68 × 12,123.46
  4. Step 4: Simplify right side
    21,683.56x = 362,766,414.07
  5. Step 5: Solve for x
    x = 362,766,414.07/21,683.56
  6. Step 6: Final answer
    x = 16,730.02

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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.