Home / 28,865.60-43,298.40-8,086.40

Finding the Fourth Proportional to 28,865.60, 43,298.40 and 8,086.40

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Solution

The fourth proportional to 28,865.60, 43,298.40 and 8,086.40 is: 12,129.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,865.60 : 43,298.40 = 8,086.40 : x
  2. Step 2: Convert to fraction form
    28,865.60/43,298.40 = 8,086.40/x
  3. Step 3: Cross multiply
    28,865.60x = 43,298.40 × 8,086.40
  4. Step 4: Simplify right side
    28,865.60x = 350,128,181.76
  5. Step 5: Solve for x
    x = 350,128,181.76/28,865.60
  6. Step 6: Final answer
    x = 12,129.60

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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.