Home / 15,563.07-21,477.03-8,489.54

Finding the Fourth Proportional to 15,563.07, 21,477.03 and 8,489.54

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Solution

The fourth proportional to 15,563.07, 21,477.03 and 8,489.54 is: 11,715.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,563.07 : 21,477.03 = 8,489.54 : x
  2. Step 2: Convert to fraction form
    15,563.07/21,477.03 = 8,489.54/x
  3. Step 3: Cross multiply
    15,563.07x = 21,477.03 × 8,489.54
  4. Step 4: Simplify right side
    15,563.07x = 182,329,997.88
  5. Step 5: Solve for x
    x = 182,329,997.88/15,563.07
  6. Step 6: Final answer
    x = 11,715.55

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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.