Home / 21,329.09-31,928.02-13,917.59

Finding the Fourth Proportional to 21,329.09, 31,928.02 and 13,917.59

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Solution

The fourth proportional to 21,329.09, 31,928.02 and 13,917.59 is: 20,833.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,329.09 : 31,928.02 = 13,917.59 : x
  2. Step 2: Convert to fraction form
    21,329.09/31,928.02 = 13,917.59/x
  3. Step 3: Cross multiply
    21,329.09x = 31,928.02 × 13,917.59
  4. Step 4: Simplify right side
    21,329.09x = 444,361,095.45
  5. Step 5: Solve for x
    x = 444,361,095.45/21,329.09
  6. Step 6: Final answer
    x = 20,833.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.