Home / 19,108.31-28,634.66-8,421.67

Finding the Fourth Proportional to 19,108.31, 28,634.66 and 8,421.67

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Solution

The fourth proportional to 19,108.31, 28,634.66 and 8,421.67 is: 12,620.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,108.31 : 28,634.66 = 8,421.67 : x
  2. Step 2: Convert to fraction form
    19,108.31/28,634.66 = 8,421.67/x
  3. Step 3: Cross multiply
    19,108.31x = 28,634.66 × 8,421.67
  4. Step 4: Simplify right side
    19,108.31x = 241,151,729.72
  5. Step 5: Solve for x
    x = 241,151,729.72/19,108.31
  6. Step 6: Final answer
    x = 12,620.26

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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.