Home / 28,654.35-42,987.60-8,662.20

Finding the Fourth Proportional to 28,654.35, 42,987.60 and 8,662.20

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Solution

The fourth proportional to 28,654.35, 42,987.60 and 8,662.20 is: 12,995.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,654.35 : 42,987.60 = 8,662.20 : x
  2. Step 2: Convert to fraction form
    28,654.35/42,987.60 = 8,662.20/x
  3. Step 3: Cross multiply
    28,654.35x = 42,987.60 × 8,662.20
  4. Step 4: Simplify right side
    28,654.35x = 372,367,188.72
  5. Step 5: Solve for x
    x = 372,367,188.72/28,654.35
  6. Step 6: Final answer
    x = 12,995.14

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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.