Home / 28,778,684.84-39,714,690.82-15,725,945.72

Finding the Fourth Proportional to 28,778,684.84, 39,714,690.82 and 15,725,945.72

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Solution

The fourth proportional to 28,778,684.84, 39,714,690.82 and 15,725,945.72 is: 21,701,862.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,778,684.84 : 39,714,690.82 = 15,725,945.72 : x
  2. Step 2: Convert to fraction form
    28,778,684.84/39,714,690.82 = 15,725,945.72/x
  3. Step 3: Cross multiply
    28,778,684.84x = 39,714,690.82 × 15,725,945.72
  4. Step 4: Simplify right side
    28,778,684.84x = 624,551,072,121,902.38
  5. Step 5: Solve for x
    x = 624,551,072,121,902.38/28,778,684.84
  6. Step 6: Final answer
    x = 21,701,862.88

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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.