Home / 20,630,287.76-28,470,479.67-11,338,187.20

Finding the Fourth Proportional to 20,630,287.76, 28,470,479.67 and 11,338,187.20

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Solution

The fourth proportional to 20,630,287.76, 28,470,479.67 and 11,338,187.20 is: 15,647,073.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,630,287.76 : 28,470,479.67 = 11,338,187.20 : x
  2. Step 2: Convert to fraction form
    20,630,287.76/28,470,479.67 = 11,338,187.20/x
  3. Step 3: Cross multiply
    20,630,287.76x = 28,470,479.67 × 11,338,187.20
  4. Step 4: Simplify right side
    20,630,287.76x = 322,803,628,101,078.06
  5. Step 5: Solve for x
    x = 322,803,628,101,078.06/20,630,287.76
  6. Step 6: Final answer
    x = 15,647,073.46

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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.