Home / 28,219.86-42,330.66-8,498.56

Finding the Fourth Proportional to 28,219.86, 42,330.66 and 8,498.56

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Solution

The fourth proportional to 28,219.86, 42,330.66 and 8,498.56 is: 12,748.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,219.86 : 42,330.66 = 8,498.56 : x
  2. Step 2: Convert to fraction form
    28,219.86/42,330.66 = 8,498.56/x
  3. Step 3: Cross multiply
    28,219.86x = 42,330.66 × 8,498.56
  4. Step 4: Simplify right side
    28,219.86x = 359,749,653.85
  5. Step 5: Solve for x
    x = 359,749,653.85/28,219.86
  6. Step 6: Final answer
    x = 12,748.10

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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.