Home / 15,515.78-23,236.47-8,485.25

Finding the Fourth Proportional to 15,515.78, 23,236.47 and 8,485.25

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Solution

The fourth proportional to 15,515.78, 23,236.47 and 8,485.25 is: 12,707.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,515.78 : 23,236.47 = 8,485.25 : x
  2. Step 2: Convert to fraction form
    15,515.78/23,236.47 = 8,485.25/x
  3. Step 3: Cross multiply
    15,515.78x = 23,236.47 × 8,485.25
  4. Step 4: Simplify right side
    15,515.78x = 197,167,140.89
  5. Step 5: Solve for x
    x = 197,167,140.89/15,515.78
  6. Step 6: Final answer
    x = 12,707.53

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1.5x scale

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.