Home / 20,138,661.90-30,219,802.65-7,360,458.30

Finding the Fourth Proportional to 20,138,661.90, 30,219,802.65 and 7,360,458.30

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Solution

The fourth proportional to 20,138,661.90, 30,219,802.65 and 7,360,458.30 is: 11,045,003.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,138,661.90 : 30,219,802.65 = 7,360,458.30 : x
  2. Step 2: Convert to fraction form
    20,138,661.90/30,219,802.65 = 7,360,458.30/x
  3. Step 3: Cross multiply
    20,138,661.90x = 30,219,802.65 × 7,360,458.30
  4. Step 4: Simplify right side
    20,138,661.90x = 222,431,597,239,554.47
  5. Step 5: Solve for x
    x = 222,431,597,239,554.47/20,138,661.90
  6. Step 6: Final answer
    x = 11,045,003.80

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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.