Home / 21,329.56-29,434.86-11,898.73

Finding the Fourth Proportional to 21,329.56, 29,434.86 and 11,898.73

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Solution

The fourth proportional to 21,329.56, 29,434.86 and 11,898.73 is: 16,420.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,329.56 : 29,434.86 = 11,898.73 : x
  2. Step 2: Convert to fraction form
    21,329.56/29,434.86 = 11,898.73/x
  3. Step 3: Cross multiply
    21,329.56x = 29,434.86 × 11,898.73
  4. Step 4: Simplify right side
    21,329.56x = 350,237,488.52
  5. Step 5: Solve for x
    x = 350,237,488.52/21,329.56
  6. Step 6: Final answer
    x = 16,420.29

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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.