Home / 19,659.53-29,431.31-12,983.78

Finding the Fourth Proportional to 19,659.53, 29,431.31 and 12,983.78

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Solution

The fourth proportional to 19,659.53, 29,431.31 and 12,983.78 is: 19,437.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,659.53 : 29,431.31 = 12,983.78 : x
  2. Step 2: Convert to fraction form
    19,659.53/29,431.31 = 12,983.78/x
  3. Step 3: Cross multiply
    19,659.53x = 29,431.31 × 12,983.78
  4. Step 4: Simplify right side
    19,659.53x = 382,129,442.08
  5. Step 5: Solve for x
    x = 382,129,442.08/19,659.53
  6. Step 6: Final answer
    x = 19,437.37

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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.