Home / 28,547,910.84-39,396,156.78-15,495,172.42

Finding the Fourth Proportional to 28,547,910.84, 39,396,156.78 and 15,495,172.42

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Solution

The fourth proportional to 28,547,910.84, 39,396,156.78 and 15,495,172.42 is: 21,383,359.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,547,910.84 : 39,396,156.78 = 15,495,172.42 : x
  2. Step 2: Convert to fraction form
    28,547,910.84/39,396,156.78 = 15,495,172.42/x
  3. Step 3: Cross multiply
    28,547,910.84x = 39,396,156.78 × 15,495,172.42
  4. Step 4: Simplify right side
    28,547,910.84x = 610,450,241,991,452
  5. Step 5: Solve for x
    x = 610,450,241,991,452/28,547,910.84
  6. Step 6: Final answer
    x = 21,383,359.55

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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.