Home / 28,467.46-39,284.35-15,721.57

Finding the Fourth Proportional to 28,467.46, 39,284.35 and 15,721.57

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Solution

The fourth proportional to 28,467.46, 39,284.35 and 15,721.57 is: 21,695.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,467.46 : 39,284.35 = 15,721.57 : x
  2. Step 2: Convert to fraction form
    28,467.46/39,284.35 = 15,721.57/x
  3. Step 3: Cross multiply
    28,467.46x = 39,284.35 × 15,721.57
  4. Step 4: Simplify right side
    28,467.46x = 617,611,658.43
  5. Step 5: Solve for x
    x = 617,611,658.43/28,467.46
  6. Step 6: Final answer
    x = 21,695.36

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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.