Home / 28,990,649.70-40,007,122.32-15,938,130.70

Finding the Fourth Proportional to 28,990,649.70, 40,007,122.32 and 15,938,130.70

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Solution

The fourth proportional to 28,990,649.70, 40,007,122.32 and 15,938,130.70 is: 21,994,634.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,990,649.70 : 40,007,122.32 = 15,938,130.70 : x
  2. Step 2: Convert to fraction form
    28,990,649.70/40,007,122.32 = 15,938,130.70/x
  3. Step 3: Cross multiply
    28,990,649.70x = 40,007,122.32 × 15,938,130.70
  4. Step 4: Simplify right side
    28,990,649.70x = 637,638,744,467,047.25
  5. Step 5: Solve for x
    x = 637,638,744,467,047.25/28,990,649.70
  6. Step 6: Final answer
    x = 21,994,634.51

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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.