Home / 20,560,123.69-28,372,970.69-11,392,766.44

Finding the Fourth Proportional to 20,560,123.69, 28,372,970.69 and 11,392,766.44

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Solution

The fourth proportional to 20,560,123.69, 28,372,970.69 and 11,392,766.44 is: 15,722,017.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,560,123.69 : 28,372,970.69 = 11,392,766.44 : x
  2. Step 2: Convert to fraction form
    20,560,123.69/28,372,970.69 = 11,392,766.44/x
  3. Step 3: Cross multiply
    20,560,123.69x = 28,372,970.69 × 11,392,766.44
  4. Step 4: Simplify right side
    20,560,123.69x = 323,246,628,194,962.25
  5. Step 5: Solve for x
    x = 323,246,628,194,962.25/20,560,123.69
  6. Step 6: Final answer
    x = 15,722,017.68

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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.