Home / 28,021.62-38,657.58-18,449.16

Finding the Fourth Proportional to 28,021.62, 38,657.58 and 18,449.16

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Solution

The fourth proportional to 28,021.62, 38,657.58 and 18,449.16 is: 25,451.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,021.62 : 38,657.58 = 18,449.16 : x
  2. Step 2: Convert to fraction form
    28,021.62/38,657.58 = 18,449.16/x
  3. Step 3: Cross multiply
    28,021.62x = 38,657.58 × 18,449.16
  4. Step 4: Simplify right side
    28,021.62x = 713,199,878.63
  5. Step 5: Solve for x
    x = 713,199,878.63/28,021.62
  6. Step 6: Final answer
    x = 25,451.77

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Half scale
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Double scale
Find fourth proportional to 28,022.62, 38,658.96 and 18,450.16
Similar ratio
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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.