Home / 14,842.69-20,482.55-8,128.60

Finding the Fourth Proportional to 14,842.69, 20,482.55 and 8,128.60

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Solution

The fourth proportional to 14,842.69, 20,482.55 and 8,128.60 is: 11,217.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,842.69 : 20,482.55 = 8,128.60 : x
  2. Step 2: Convert to fraction form
    14,842.69/20,482.55 = 8,128.60/x
  3. Step 3: Cross multiply
    14,842.69x = 20,482.55 × 8,128.60
  4. Step 4: Simplify right side
    14,842.69x = 166,494,455.93
  5. Step 5: Solve for x
    x = 166,494,455.93/14,842.69
  6. Step 6: Final answer
    x = 11,217.27

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Double scale
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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.