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Finding the Fourth Proportional to 13,527.90, 18,665.67 and 7,935.90

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Solution

The fourth proportional to 13,527.90, 18,665.67 and 7,935.90 is: 10,949.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,527.90 : 18,665.67 = 7,935.90 : x
  2. Step 2: Convert to fraction form
    13,527.90/18,665.67 = 7,935.90/x
  3. Step 3: Cross multiply
    13,527.90x = 18,665.67 × 7,935.90
  4. Step 4: Simplify right side
    13,527.90x = 148,128,890.55
  5. Step 5: Solve for x
    x = 148,128,890.55/13,527.90
  6. Step 6: Final answer
    x = 10,949.88

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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.