Home / 15,426.88-21,289.11-8,353.28

Finding the Fourth Proportional to 15,426.88, 21,289.11 and 8,353.28

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Solution

The fourth proportional to 15,426.88, 21,289.11 and 8,353.28 is: 11,527.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,426.88 : 21,289.11 = 8,353.28 : x
  2. Step 2: Convert to fraction form
    15,426.88/21,289.11 = 8,353.28/x
  3. Step 3: Cross multiply
    15,426.88x = 21,289.11 × 8,353.28
  4. Step 4: Simplify right side
    15,426.88x = 177,833,918.68
  5. Step 5: Solve for x
    x = 177,833,918.68/15,426.88
  6. Step 6: Final answer
    x = 11,527.54

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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.