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Finding the Fourth Proportional to 10,361.60, 15,518.10 and 7,056.80

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Solution

The fourth proportional to 10,361.60, 15,518.10 and 7,056.80 is: 10,568.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,361.60 : 15,518.10 = 7,056.80 : x
  2. Step 2: Convert to fraction form
    10,361.60/15,518.10 = 7,056.80/x
  3. Step 3: Cross multiply
    10,361.60x = 15,518.10 × 7,056.80
  4. Step 4: Simplify right side
    10,361.60x = 109,508,128.08
  5. Step 5: Solve for x
    x = 109,508,128.08/10,361.60
  6. Step 6: Final answer
    x = 10,568.65

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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.