Home / 15,091.31-20,825.69-8,376.54

Finding the Fourth Proportional to 15,091.31, 20,825.69 and 8,376.54

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Solution

The fourth proportional to 15,091.31, 20,825.69 and 8,376.54 is: 11,559.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,091.31 : 20,825.69 = 8,376.54 : x
  2. Step 2: Convert to fraction form
    15,091.31/20,825.69 = 8,376.54/x
  3. Step 3: Cross multiply
    15,091.31x = 20,825.69 × 8,376.54
  4. Step 4: Simplify right side
    15,091.31x = 174,447,225.31
  5. Step 5: Solve for x
    x = 174,447,225.31/15,091.31
  6. Step 6: Final answer
    x = 11,559.45

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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.