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Finding the Fourth Proportional to 15,389.84, 23,076.54 and 7,986.84

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Solution

The fourth proportional to 15,389.84, 23,076.54 and 7,986.84 is: 11,975.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,389.84 : 23,076.54 = 7,986.84 : x
  2. Step 2: Convert to fraction form
    15,389.84/23,076.54 = 7,986.84/x
  3. Step 3: Cross multiply
    15,389.84x = 23,076.54 × 7,986.84
  4. Step 4: Simplify right side
    15,389.84x = 184,308,632.73
  5. Step 5: Solve for x
    x = 184,308,632.73/15,389.84
  6. Step 6: Final answer
    x = 11,975.99

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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.