Home / 15,768.42-23,615.73-12,459.30

Finding the Fourth Proportional to 15,768.42, 23,615.73 and 12,459.30

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Solution

The fourth proportional to 15,768.42, 23,615.73 and 12,459.30 is: 18,659.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,768.42 : 23,615.73 = 12,459.30 : x
  2. Step 2: Convert to fraction form
    15,768.42/23,615.73 = 12,459.30/x
  3. Step 3: Cross multiply
    15,768.42x = 23,615.73 × 12,459.30
  4. Step 4: Simplify right side
    15,768.42x = 294,235,464.79
  5. Step 5: Solve for x
    x = 294,235,464.79/15,768.42
  6. Step 6: Final answer
    x = 18,659.79

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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.