Home / 28,990,647.33-40,007,119.05-15,938,128.32

Finding the Fourth Proportional to 28,990,647.33, 40,007,119.05 and 15,938,128.32

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Solution

The fourth proportional to 28,990,647.33, 40,007,119.05 and 15,938,128.32 is: 21,994,631.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,990,647.33 : 40,007,119.05 = 15,938,128.32 : x
  2. Step 2: Convert to fraction form
    28,990,647.33/40,007,119.05 = 15,938,128.32/x
  3. Step 3: Cross multiply
    28,990,647.33x = 40,007,119.05 × 15,938,128.32
  4. Step 4: Simplify right side
    28,990,647.33x = 637,638,596,982,389.75
  5. Step 5: Solve for x
    x = 637,638,596,982,389.75/28,990,647.33
  6. Step 6: Final answer
    x = 21,994,631.23

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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.