Home / 21,237.60-29,299.71-13,683.33

Finding the Fourth Proportional to 21,237.60, 29,299.71 and 13,683.33

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Solution

The fourth proportional to 21,237.60, 29,299.71 and 13,683.33 is: 18,877.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,237.60 : 29,299.71 = 13,683.33 : x
  2. Step 2: Convert to fraction form
    21,237.60/29,299.71 = 13,683.33/x
  3. Step 3: Cross multiply
    21,237.60x = 29,299.71 × 13,683.33
  4. Step 4: Simplify right side
    21,237.60x = 400,917,600.83
  5. Step 5: Solve for x
    x = 400,917,600.83/21,237.60
  6. Step 6: Final answer
    x = 18,877.73

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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.