Home / 14,157.78-21,239.28-6,762.75

Finding the Fourth Proportional to 14,157.78, 21,239.28 and 6,762.75

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Solution

The fourth proportional to 14,157.78, 21,239.28 and 6,762.75 is: 10,145.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,157.78 : 21,239.28 = 6,762.75 : x
  2. Step 2: Convert to fraction form
    14,157.78/21,239.28 = 6,762.75/x
  3. Step 3: Cross multiply
    14,157.78x = 21,239.28 × 6,762.75
  4. Step 4: Simplify right side
    14,157.78x = 143,635,940.82
  5. Step 5: Solve for x
    x = 143,635,940.82/14,157.78
  6. Step 6: Final answer
    x = 10,145.37

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1.5x scale

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.