Home / 28,718,656.65-39,631,698.12-15,665,915.56

Finding the Fourth Proportional to 28,718,656.65, 39,631,698.12 and 15,665,915.56

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Solution

The fourth proportional to 28,718,656.65, 39,631,698.12 and 15,665,915.56 is: 21,618,937.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,718,656.65 : 39,631,698.12 = 15,665,915.56 : x
  2. Step 2: Convert to fraction form
    28,718,656.65/39,631,698.12 = 15,665,915.56/x
  3. Step 3: Cross multiply
    28,718,656.65x = 39,631,698.12 × 15,665,915.56
  4. Step 4: Simplify right side
    28,718,656.65x = 620,866,836,247,330.75
  5. Step 5: Solve for x
    x = 620,866,836,247,330.75/28,718,656.65
  6. Step 6: Final answer
    x = 21,618,937.26

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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.