Home / 15,697.06-21,665.68-8,986.56

Finding the Fourth Proportional to 15,697.06, 21,665.68 and 8,986.56

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Solution

The fourth proportional to 15,697.06, 21,665.68 and 8,986.56 is: 12,403.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,697.06 : 21,665.68 = 8,986.56 : x
  2. Step 2: Convert to fraction form
    15,697.06/21,665.68 = 8,986.56/x
  3. Step 3: Cross multiply
    15,697.06x = 21,665.68 × 8,986.56
  4. Step 4: Simplify right side
    15,697.06x = 194,699,933.26
  5. Step 5: Solve for x
    x = 194,699,933.26/15,697.06
  6. Step 6: Final answer
    x = 12,403.59

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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.