Home / 20,946.92-28,911.15-13,285.23

Finding the Fourth Proportional to 20,946.92, 28,911.15 and 13,285.23

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Solution

The fourth proportional to 20,946.92, 28,911.15 and 13,285.23 is: 18,336.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,946.92 : 28,911.15 = 13,285.23 : x
  2. Step 2: Convert to fraction form
    20,946.92/28,911.15 = 13,285.23/x
  3. Step 3: Cross multiply
    20,946.92x = 28,911.15 × 13,285.23
  4. Step 4: Simplify right side
    20,946.92x = 384,091,277.31
  5. Step 5: Solve for x
    x = 384,091,277.31/20,946.92
  6. Step 6: Final answer
    x = 18,336.41

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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.