Home / 21,080,314.80-31,620,472.20-9,742,906.80

Finding the Fourth Proportional to 21,080,314.80, 31,620,472.20 and 9,742,906.80

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Solution

The fourth proportional to 21,080,314.80, 31,620,472.20 and 9,742,906.80 is: 14,614,360.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,080,314.80 : 31,620,472.20 = 9,742,906.80 : x
  2. Step 2: Convert to fraction form
    21,080,314.80/31,620,472.20 = 9,742,906.80/x
  3. Step 3: Cross multiply
    21,080,314.80x = 31,620,472.20 × 9,742,906.80
  4. Step 4: Simplify right side
    21,080,314.80x = 308,075,313,616,591
  5. Step 5: Solve for x
    x = 308,075,313,616,591/21,080,314.80
  6. Step 6: Final answer
    x = 14,614,360.20

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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.