Home / 21,475,495.87-29,666,075.42-20,678,212.11

Finding the Fourth Proportional to 21,475,495.87, 29,666,075.42 and 20,678,212.11

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Solution

The fourth proportional to 21,475,495.87, 29,666,075.42 and 20,678,212.11 is: 28,564,714.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,475,495.87 : 29,666,075.42 = 20,678,212.11 : x
  2. Step 2: Convert to fraction form
    21,475,495.87/29,666,075.42 = 20,678,212.11/x
  3. Step 3: Cross multiply
    21,475,495.87x = 29,666,075.42 × 20,678,212.11
  4. Step 4: Simplify right side
    21,475,495.87x = 613,441,399,980,169.50
  5. Step 5: Solve for x
    x = 613,441,399,980,169.50/21,475,495.87
  6. Step 6: Final answer
    x = 28,564,714.11

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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.