Home / 20,982.96-28,956.56-12,030.64

Finding the Fourth Proportional to 20,982.96, 28,956.56 and 12,030.64

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Solution

The fourth proportional to 20,982.96, 28,956.56 and 12,030.64 is: 16,602.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,982.96 : 28,956.56 = 12,030.64 : x
  2. Step 2: Convert to fraction form
    20,982.96/28,956.56 = 12,030.64/x
  3. Step 3: Cross multiply
    20,982.96x = 28,956.56 × 12,030.64
  4. Step 4: Simplify right side
    20,982.96x = 348,365,949.00
  5. Step 5: Solve for x
    x = 348,365,949.00/20,982.96
  6. Step 6: Final answer
    x = 16,602.33

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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.