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Finding the Fourth Proportional to 13,477.79, 18,601.79 and 7,816.16

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Solution

The fourth proportional to 13,477.79, 18,601.79 and 7,816.16 is: 10,787.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,477.79 : 18,601.79 = 7,816.16 : x
  2. Step 2: Convert to fraction form
    13,477.79/18,601.79 = 7,816.16/x
  3. Step 3: Cross multiply
    13,477.79x = 18,601.79 × 7,816.16
  4. Step 4: Simplify right side
    13,477.79x = 145,394,434.84
  5. Step 5: Solve for x
    x = 145,394,434.84/13,477.79
  6. Step 6: Final answer
    x = 10,787.71

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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.