Home / 28,021.20-42,034.86-11,378.82

Finding the Fourth Proportional to 28,021.20, 42,034.86 and 11,378.82

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Solution

The fourth proportional to 28,021.20, 42,034.86 and 11,378.82 is: 17,069.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,021.20 : 42,034.86 = 11,378.82 : x
  2. Step 2: Convert to fraction form
    28,021.20/42,034.86 = 11,378.82/x
  3. Step 3: Cross multiply
    28,021.20x = 42,034.86 × 11,378.82
  4. Step 4: Simplify right side
    28,021.20x = 478,307,105.67
  5. Step 5: Solve for x
    x = 478,307,105.67/28,021.20
  6. Step 6: Final answer
    x = 17,069.47

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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.