Home / 28,638.71-39,506.16-16,697.69

Finding the Fourth Proportional to 28,638.71, 39,506.16 and 16,697.69

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Solution

The fourth proportional to 28,638.71, 39,506.16 and 16,697.69 is: 23,033.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,638.71 : 39,506.16 = 16,697.69 : x
  2. Step 2: Convert to fraction form
    28,638.71/39,506.16 = 16,697.69/x
  3. Step 3: Cross multiply
    28,638.71x = 39,506.16 × 16,697.69
  4. Step 4: Simplify right side
    28,638.71x = 659,661,415.24
  5. Step 5: Solve for x
    x = 659,661,415.24/28,638.71
  6. Step 6: Final answer
    x = 23,033.91

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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.