Home / 21,702.94-29,945.19-13,209.46

Finding the Fourth Proportional to 21,702.94, 29,945.19 and 13,209.46

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Solution

The fourth proportional to 21,702.94, 29,945.19 and 13,209.46 is: 18,226.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,702.94 : 29,945.19 = 13,209.46 : x
  2. Step 2: Convert to fraction form
    21,702.94/29,945.19 = 13,209.46/x
  3. Step 3: Cross multiply
    21,702.94x = 29,945.19 × 13,209.46
  4. Step 4: Simplify right side
    21,702.94x = 395,559,789.50
  5. Step 5: Solve for x
    x = 395,559,789.50/21,702.94
  6. Step 6: Final answer
    x = 18,226.09

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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.