Home / 20,946.40-28,906.52-11,386.83

Finding the Fourth Proportional to 20,946.40, 28,906.52 and 11,386.83

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Solution

The fourth proportional to 20,946.40, 28,906.52 and 11,386.83 is: 15,714.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,946.40 : 28,906.52 = 11,386.83 : x
  2. Step 2: Convert to fraction form
    20,946.40/28,906.52 = 11,386.83/x
  3. Step 3: Cross multiply
    20,946.40x = 28,906.52 × 11,386.83
  4. Step 4: Simplify right side
    20,946.40x = 329,153,582.05
  5. Step 5: Solve for x
    x = 329,153,582.05/20,946.40
  6. Step 6: Final answer
    x = 15,714.09

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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.