Home / 20,899.32-28,841.06-11,467.68

Finding the Fourth Proportional to 20,899.32, 28,841.06 and 11,467.68

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Solution

The fourth proportional to 20,899.32, 28,841.06 and 11,467.68 is: 15,825.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,899.32 : 28,841.06 = 11,467.68 : x
  2. Step 2: Convert to fraction form
    20,899.32/28,841.06 = 11,467.68/x
  3. Step 3: Cross multiply
    20,899.32x = 28,841.06 × 11,467.68
  4. Step 4: Simplify right side
    20,899.32x = 330,740,046.94
  5. Step 5: Solve for x
    x = 330,740,046.94/20,899.32
  6. Step 6: Final answer
    x = 15,825.40

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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.