Home / 19,589.58-29,378.07-6,438.87

Finding the Fourth Proportional to 19,589.58, 29,378.07 and 6,438.87

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Solution

The fourth proportional to 19,589.58, 29,378.07 and 6,438.87 is: 9,656.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,589.58 : 29,378.07 = 6,438.87 : x
  2. Step 2: Convert to fraction form
    19,589.58/29,378.07 = 6,438.87/x
  3. Step 3: Cross multiply
    19,589.58x = 29,378.07 × 6,438.87
  4. Step 4: Simplify right side
    19,589.58x = 189,161,573.58
  5. Step 5: Solve for x
    x = 189,161,573.58/19,589.58
  6. Step 6: Final answer
    x = 9,656.23

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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.