Home / 20,946.33-28,902.71-12,445.31

Finding the Fourth Proportional to 20,946.33, 28,902.71 and 12,445.31

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Solution

The fourth proportional to 20,946.33, 28,902.71 and 12,445.31 is: 17,172.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,946.33 : 28,902.71 = 12,445.31 : x
  2. Step 2: Convert to fraction form
    20,946.33/28,902.71 = 12,445.31/x
  3. Step 3: Cross multiply
    20,946.33x = 28,902.71 × 12,445.31
  4. Step 4: Simplify right side
    20,946.33x = 359,703,180.77
  5. Step 5: Solve for x
    x = 359,703,180.77/20,946.33
  6. Step 6: Final answer
    x = 17,172.61

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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.