Home / 28,241.18-42,368.60-8,518.54

Finding the Fourth Proportional to 28,241.18, 42,368.60 and 8,518.54

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Solution

The fourth proportional to 28,241.18, 42,368.60 and 8,518.54 is: 12,779.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,241.18 : 42,368.60 = 8,518.54 : x
  2. Step 2: Convert to fraction form
    28,241.18/42,368.60 = 8,518.54/x
  3. Step 3: Cross multiply
    28,241.18x = 42,368.60 × 8,518.54
  4. Step 4: Simplify right side
    28,241.18x = 360,918,613.84
  5. Step 5: Solve for x
    x = 360,918,613.84/28,241.18
  6. Step 6: Final answer
    x = 12,779.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.