Home / 26,859.15-40,289.55-12,820.67

Finding the Fourth Proportional to 26,859.15, 40,289.55 and 12,820.67

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Solution

The fourth proportional to 26,859.15, 40,289.55 and 12,820.67 is: 19,231.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,859.15 : 40,289.55 = 12,820.67 : x
  2. Step 2: Convert to fraction form
    26,859.15/40,289.55 = 12,820.67/x
  3. Step 3: Cross multiply
    26,859.15x = 40,289.55 × 12,820.67
  4. Step 4: Simplify right side
    26,859.15x = 516,539,025.00
  5. Step 5: Solve for x
    x = 516,539,025.00/26,859.15
  6. Step 6: Final answer
    x = 19,231.40

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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.