Home / 20,498.54-28,289.61-11,545.47

Finding the Fourth Proportional to 20,498.54, 28,289.61 and 11,545.47

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Solution

The fourth proportional to 20,498.54, 28,289.61 and 11,545.47 is: 15,933.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,498.54 : 28,289.61 = 11,545.47 : x
  2. Step 2: Convert to fraction form
    20,498.54/28,289.61 = 11,545.47/x
  3. Step 3: Cross multiply
    20,498.54x = 28,289.61 × 11,545.47
  4. Step 4: Simplify right side
    20,498.54x = 326,616,843.57
  5. Step 5: Solve for x
    x = 326,616,843.57/20,498.54
  6. Step 6: Final answer
    x = 15,933.67

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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.