Home / 10,378.12-14,321.80-5,662.44

Finding the Fourth Proportional to 10,378.12, 14,321.80 and 5,662.44

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Solution

The fourth proportional to 10,378.12, 14,321.80 and 5,662.44 is: 7,814.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,378.12 : 14,321.80 = 5,662.44 : x
  2. Step 2: Convert to fraction form
    10,378.12/14,321.80 = 5,662.44/x
  3. Step 3: Cross multiply
    10,378.12x = 14,321.80 × 5,662.44
  4. Step 4: Simplify right side
    10,378.12x = 81,096,333.19
  5. Step 5: Solve for x
    x = 81,096,333.19/10,378.12
  6. Step 6: Final answer
    x = 7,814.16

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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.