Home / 20,427.60-30,659.40-12,097.20

Finding the Fourth Proportional to 20,427.60, 30,659.40 and 12,097.20

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Solution

The fourth proportional to 20,427.60, 30,659.40 and 12,097.20 is: 18,156.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,427.60 : 30,659.40 = 12,097.20 : x
  2. Step 2: Convert to fraction form
    20,427.60/30,659.40 = 12,097.20/x
  3. Step 3: Cross multiply
    20,427.60x = 30,659.40 × 12,097.20
  4. Step 4: Simplify right side
    20,427.60x = 370,892,893.68
  5. Step 5: Solve for x
    x = 370,892,893.68/20,427.60
  6. Step 6: Final answer
    x = 18,156.46

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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.