Home / 20,539,408.80-28,345,269.84-11,372,051.52

Finding the Fourth Proportional to 20,539,408.80, 28,345,269.84 and 11,372,051.52

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Solution

The fourth proportional to 20,539,408.80, 28,345,269.84 and 11,372,051.52 is: 15,693,921.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,539,408.80 : 28,345,269.84 = 11,372,051.52 : x
  2. Step 2: Convert to fraction form
    20,539,408.80/28,345,269.84 = 11,372,051.52/x
  3. Step 3: Cross multiply
    20,539,408.80x = 28,345,269.84 × 11,372,051.52
  4. Step 4: Simplify right side
    20,539,408.80x = 322,343,868,968,782.12
  5. Step 5: Solve for x
    x = 322,343,868,968,782.12/20,539,408.80
  6. Step 6: Final answer
    x = 15,693,921.48

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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.