Home / 21,237.90-29,308.38-11,806.46

Finding the Fourth Proportional to 21,237.90, 29,308.38 and 11,806.46

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Solution

The fourth proportional to 21,237.90, 29,308.38 and 11,806.46 is: 16,292.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,237.90 : 29,308.38 = 11,806.46 : x
  2. Step 2: Convert to fraction form
    21,237.90/29,308.38 = 11,806.46/x
  3. Step 3: Cross multiply
    21,237.90x = 29,308.38 × 11,806.46
  4. Step 4: Simplify right side
    21,237.90x = 346,028,201.64
  5. Step 5: Solve for x
    x = 346,028,201.64/21,237.90
  6. Step 6: Final answer
    x = 16,292.96

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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.