Home / 18,528.64-27,793.26-12,990.67

Finding the Fourth Proportional to 18,528.64, 27,793.26 and 12,990.67

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Solution

The fourth proportional to 18,528.64, 27,793.26 and 12,990.67 is: 19,486.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,528.64 : 27,793.26 = 12,990.67 : x
  2. Step 2: Convert to fraction form
    18,528.64/27,793.26 = 12,990.67/x
  3. Step 3: Cross multiply
    18,528.64x = 27,793.26 × 12,990.67
  4. Step 4: Simplify right side
    18,528.64x = 361,052,999.40
  5. Step 5: Solve for x
    x = 361,052,999.40/18,528.64
  6. Step 6: Final answer
    x = 19,486.21

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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.