Home / 20,530,744.32-28,331,980.80-11,362,836.48

Finding the Fourth Proportional to 20,530,744.32, 28,331,980.80 and 11,362,836.48

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Solution

The fourth proportional to 20,530,744.32, 28,331,980.80 and 11,362,836.48 is: 15,680,467.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,530,744.32 : 28,331,980.80 = 11,362,836.48 : x
  2. Step 2: Convert to fraction form
    20,530,744.32/28,331,980.80 = 11,362,836.48/x
  3. Step 3: Cross multiply
    20,530,744.32x = 28,331,980.80 × 11,362,836.48
  4. Step 4: Simplify right side
    20,530,744.32x = 321,931,664,984,899.62
  5. Step 5: Solve for x
    x = 321,931,664,984,899.62/20,530,744.32
  6. Step 6: Final answer
    x = 15,680,467.30

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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.