Home / 21,289.24-31,933.86-9,890.02

Finding the Fourth Proportional to 21,289.24, 31,933.86 and 9,890.02

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Solution

The fourth proportional to 21,289.24, 31,933.86 and 9,890.02 is: 14,835.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,289.24 : 31,933.86 = 9,890.02 : x
  2. Step 2: Convert to fraction form
    21,289.24/31,933.86 = 9,890.02/x
  3. Step 3: Cross multiply
    21,289.24x = 31,933.86 × 9,890.02
  4. Step 4: Simplify right side
    21,289.24x = 315,826,514.08
  5. Step 5: Solve for x
    x = 315,826,514.08/21,289.24
  6. Step 6: Final answer
    x = 14,835.03

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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.