Home / 34,409.88-47,438.46-28,439.64

Finding the Fourth Proportional to 34,409.88, 47,438.46 and 28,439.64

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Solution

The fourth proportional to 34,409.88, 47,438.46 and 28,439.64 is: 39,207.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,409.88 : 47,438.46 = 28,439.64 : x
  2. Step 2: Convert to fraction form
    34,409.88/47,438.46 = 28,439.64/x
  3. Step 3: Cross multiply
    34,409.88x = 47,438.46 × 28,439.64
  4. Step 4: Simplify right side
    34,409.88x = 1,349,132,724.55
  5. Step 5: Solve for x
    x = 1,349,132,724.55/34,409.88
  6. Step 6: Final answer
    x = 39,207.71

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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.