Home / 20,921,333.98-28,879,272.64-15,709,398.24

Finding the Fourth Proportional to 20,921,333.98, 28,879,272.64 and 15,709,398.24

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Solution

The fourth proportional to 20,921,333.98, 28,879,272.64 and 15,709,398.24 is: 21,684,850.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,921,333.98 : 28,879,272.64 = 15,709,398.24 : x
  2. Step 2: Convert to fraction form
    20,921,333.98/28,879,272.64 = 15,709,398.24/x
  3. Step 3: Cross multiply
    20,921,333.98x = 28,879,272.64 × 15,709,398.24
  4. Step 4: Simplify right side
    20,921,333.98x = 453,675,994,783,296.19
  5. Step 5: Solve for x
    x = 453,675,994,783,296.19/20,921,333.98
  6. Step 6: Final answer
    x = 21,684,850.27

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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.