Home / 21,329.59-31,999.39-7,289.73

Finding the Fourth Proportional to 21,329.59, 31,999.39 and 7,289.73

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Solution

The fourth proportional to 21,329.59, 31,999.39 and 7,289.73 is: 10,936.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,329.59 : 31,999.39 = 7,289.73 : x
  2. Step 2: Convert to fraction form
    21,329.59/31,999.39 = 7,289.73/x
  3. Step 3: Cross multiply
    21,329.59x = 31,999.39 × 7,289.73
  4. Step 4: Simplify right side
    21,329.59x = 233,266,913.26
  5. Step 5: Solve for x
    x = 233,266,913.26/21,329.59
  6. Step 6: Final answer
    x = 10,936.31

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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.