Home / 20,009,789.76-30,023,739.36-7,875,912

Finding the Fourth Proportional to 20,009,789.76, 30,023,739.36 and 7,875,912

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Solution

The fourth proportional to 20,009,789.76, 30,023,739.36 and 7,875,912 is: 11,817,431.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,009,789.76 : 30,023,739.36 = 7,875,912 : x
  2. Step 2: Convert to fraction form
    20,009,789.76/30,023,739.36 = 7,875,912/x
  3. Step 3: Cross multiply
    20,009,789.76x = 30,023,739.36 × 7,875,912
  4. Step 4: Simplify right side
    20,009,789.76x = 236,464,329,110,296.31
  5. Step 5: Solve for x
    x = 236,464,329,110,296.31/20,009,789.76
  6. Step 6: Final answer
    x = 11,817,431.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.