Home / 20,841.72-31,260.48-11,478.60

Finding the Fourth Proportional to 20,841.72, 31,260.48 and 11,478.60

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Solution

The fourth proportional to 20,841.72, 31,260.48 and 11,478.60 is: 17,216.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,841.72 : 31,260.48 = 11,478.60 : x
  2. Step 2: Convert to fraction form
    20,841.72/31,260.48 = 11,478.60/x
  3. Step 3: Cross multiply
    20,841.72x = 31,260.48 × 11,478.60
  4. Step 4: Simplify right side
    20,841.72x = 358,826,545.73
  5. Step 5: Solve for x
    x = 358,826,545.73/20,841.72
  6. Step 6: Final answer
    x = 17,216.74

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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.