Home / 20,539,558.32-28,345,476-11,372,200.80

Finding the Fourth Proportional to 20,539,558.32, 28,345,476 and 11,372,200.80

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Solution

The fourth proportional to 20,539,558.32, 28,345,476 and 11,372,200.80 is: 15,694,127.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,539,558.32 : 28,345,476 = 11,372,200.80 : x
  2. Step 2: Convert to fraction form
    20,539,558.32/28,345,476 = 11,372,200.80/x
  3. Step 3: Cross multiply
    20,539,558.32x = 28,345,476 × 11,372,200.80
  4. Step 4: Simplify right side
    20,539,558.32x = 322,350,444,843,580.81
  5. Step 5: Solve for x
    x = 322,350,444,843,580.81/20,539,558.32
  6. Step 6: Final answer
    x = 15,694,127.39

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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.