Home / 28,665,672-39,558,627.84-15,788,616

Finding the Fourth Proportional to 28,665,672, 39,558,627.84 and 15,788,616

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Solution

The fourth proportional to 28,665,672, 39,558,627.84 and 15,788,616 is: 21,788,290.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,665,672 : 39,558,627.84 = 15,788,616 : x
  2. Step 2: Convert to fraction form
    28,665,672/39,558,627.84 = 15,788,616/x
  3. Step 3: Cross multiply
    28,665,672x = 39,558,627.84 × 15,788,616
  4. Step 4: Simplify right side
    28,665,672x = 624,575,984,452,669.50
  5. Step 5: Solve for x
    x = 624,575,984,452,669.50/28,665,672
  6. Step 6: Final answer
    x = 21,788,290.34

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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.