Home / 28,419.76-42,635.81-10,889.61

Finding the Fourth Proportional to 28,419.76, 42,635.81 and 10,889.61

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Solution

The fourth proportional to 28,419.76, 42,635.81 and 10,889.61 is: 16,336.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,419.76 : 42,635.81 = 10,889.61 : x
  2. Step 2: Convert to fraction form
    28,419.76/42,635.81 = 10,889.61/x
  3. Step 3: Cross multiply
    28,419.76x = 42,635.81 × 10,889.61
  4. Step 4: Simplify right side
    28,419.76x = 464,287,342.93
  5. Step 5: Solve for x
    x = 464,287,342.93/28,419.76
  6. Step 6: Final answer
    x = 16,336.78

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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.