Home / 21,347.85-29,461.65-11,789.56

Finding the Fourth Proportional to 21,347.85, 29,461.65 and 11,789.56

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Solution

The fourth proportional to 21,347.85, 29,461.65 and 11,789.56 is: 16,270.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,347.85 : 29,461.65 = 11,789.56 : x
  2. Step 2: Convert to fraction form
    21,347.85/29,461.65 = 11,789.56/x
  3. Step 3: Cross multiply
    21,347.85x = 29,461.65 × 11,789.56
  4. Step 4: Simplify right side
    21,347.85x = 347,339,890.37
  5. Step 5: Solve for x
    x = 347,339,890.37/21,347.85
  6. Step 6: Final answer
    x = 16,270.49

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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.