Home / 14,278.05-21,420.32-7,704.09

Finding the Fourth Proportional to 14,278.05, 21,420.32 and 7,704.09

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Solution

The fourth proportional to 14,278.05, 21,420.32 and 7,704.09 is: 11,557.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,278.05 : 21,420.32 = 7,704.09 : x
  2. Step 2: Convert to fraction form
    14,278.05/21,420.32 = 7,704.09/x
  3. Step 3: Cross multiply
    14,278.05x = 21,420.32 × 7,704.09
  4. Step 4: Simplify right side
    14,278.05x = 165,024,034.59
  5. Step 5: Solve for x
    x = 165,024,034.59/14,278.05
  6. Step 6: Final answer
    x = 11,557.88

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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.