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Finding the Fourth Proportional to 13,425.71, 18,527.46 and 7,836.71

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Solution

The fourth proportional to 13,425.71, 18,527.46 and 7,836.71 is: 10,814.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,425.71 : 18,527.46 = 7,836.71 : x
  2. Step 2: Convert to fraction form
    13,425.71/18,527.46 = 7,836.71/x
  3. Step 3: Cross multiply
    13,425.71x = 18,527.46 × 7,836.71
  4. Step 4: Simplify right side
    13,425.71x = 145,194,238.42
  5. Step 5: Solve for x
    x = 145,194,238.42/13,425.71
  6. Step 6: Final answer
    x = 10,814.65

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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.