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Finding the Fourth Proportional to 10,361.76, 14,304.92 and 7,715.49

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Solution

The fourth proportional to 10,361.76, 14,304.92 and 7,715.49 is: 10,651.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,361.76 : 14,304.92 = 7,715.49 : x
  2. Step 2: Convert to fraction form
    10,361.76/14,304.92 = 7,715.49/x
  3. Step 3: Cross multiply
    10,361.76x = 14,304.92 × 7,715.49
  4. Step 4: Simplify right side
    10,361.76x = 110,369,428.63
  5. Step 5: Solve for x
    x = 110,369,428.63/10,361.76
  6. Step 6: Final answer
    x = 10,651.61

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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.