Home / 28,467.34-39,284.70-15,721.32

Finding the Fourth Proportional to 28,467.34, 39,284.70 and 15,721.32

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Solution

The fourth proportional to 28,467.34, 39,284.70 and 15,721.32 is: 21,695.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,467.34 : 39,284.70 = 15,721.32 : x
  2. Step 2: Convert to fraction form
    28,467.34/39,284.70 = 15,721.32/x
  3. Step 3: Cross multiply
    28,467.34x = 39,284.70 × 15,721.32
  4. Step 4: Simplify right side
    28,467.34x = 617,607,339.80
  5. Step 5: Solve for x
    x = 617,607,339.80/28,467.34
  6. Step 6: Final answer
    x = 21,695.30

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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.