Home / 21,003,973.20-31,505,959.80-5,047,621.20

Finding the Fourth Proportional to 21,003,973.20, 31,505,959.80 and 5,047,621.20

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Solution

The fourth proportional to 21,003,973.20, 31,505,959.80 and 5,047,621.20 is: 7,571,431.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,003,973.20 : 31,505,959.80 = 5,047,621.20 : x
  2. Step 2: Convert to fraction form
    21,003,973.20/31,505,959.80 = 5,047,621.20/x
  3. Step 3: Cross multiply
    21,003,973.20x = 31,505,959.80 × 5,047,621.20
  4. Step 4: Simplify right side
    21,003,973.20x = 159,030,150,612,827.78
  5. Step 5: Solve for x
    x = 159,030,150,612,827.78/21,003,973.20
  6. Step 6: Final answer
    x = 7,571,431.80

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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.