Home / 28,428.18-39,231.06-16,498.62

Finding the Fourth Proportional to 28,428.18, 39,231.06 and 16,498.62

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Solution

The fourth proportional to 28,428.18, 39,231.06 and 16,498.62 is: 22,768.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,428.18 : 39,231.06 = 16,498.62 : x
  2. Step 2: Convert to fraction form
    28,428.18/39,231.06 = 16,498.62/x
  3. Step 3: Cross multiply
    28,428.18x = 39,231.06 × 16,498.62
  4. Step 4: Simplify right side
    28,428.18x = 647,258,351.14
  5. Step 5: Solve for x
    x = 647,258,351.14/28,428.18
  6. Step 6: Final answer
    x = 22,768.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.