Home / 20,539,574.40-28,345,498.24-11,372,216.96

Finding the Fourth Proportional to 20,539,574.40, 28,345,498.24 and 11,372,216.96

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Solution

The fourth proportional to 20,539,574.40, 28,345,498.24 and 11,372,216.96 is: 15,694,149.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,539,574.40 : 28,345,498.24 = 11,372,216.96 : x
  2. Step 2: Convert to fraction form
    20,539,574.40/28,345,498.24 = 11,372,216.96/x
  3. Step 3: Cross multiply
    20,539,574.40x = 28,345,498.24 × 11,372,216.96
  4. Step 4: Simplify right side
    20,539,574.40x = 322,351,155,824,578.19
  5. Step 5: Solve for x
    x = 322,351,155,824,578.19/20,539,574.40
  6. Step 6: Final answer
    x = 15,694,149.72

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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.