Home / 28,991,907.84-40,008,858.48-15,939,388.92

Finding the Fourth Proportional to 28,991,907.84, 40,008,858.48 and 15,939,388.92

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Solution

The fourth proportional to 28,991,907.84, 40,008,858.48 and 15,939,388.92 is: 21,996,370.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,991,907.84 : 40,008,858.48 = 15,939,388.92 : x
  2. Step 2: Convert to fraction form
    28,991,907.84/40,008,858.48 = 15,939,388.92/x
  3. Step 3: Cross multiply
    28,991,907.84x = 40,008,858.48 × 15,939,388.92
  4. Step 4: Simplify right side
    28,991,907.84x = 637,716,755,557,960
  5. Step 5: Solve for x
    x = 637,716,755,557,960/28,991,907.84
  6. Step 6: Final answer
    x = 21,996,370.82

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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.