Home / 21,123.63-29,150.44-11,563.70

Finding the Fourth Proportional to 21,123.63, 29,150.44 and 11,563.70

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Solution

The fourth proportional to 21,123.63, 29,150.44 and 11,563.70 is: 15,957.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,123.63 : 29,150.44 = 11,563.70 : x
  2. Step 2: Convert to fraction form
    21,123.63/29,150.44 = 11,563.70/x
  3. Step 3: Cross multiply
    21,123.63x = 29,150.44 × 11,563.70
  4. Step 4: Simplify right side
    21,123.63x = 337,086,768.37
  5. Step 5: Solve for x
    x = 337,086,768.37/21,123.63
  6. Step 6: Final answer
    x = 15,957.80

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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.