Home / 15,439,731.45-21,306,418.25-8,913,140.25

Finding the Fourth Proportional to 15,439,731.45, 21,306,418.25 and 8,913,140.25

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Solution

The fourth proportional to 15,439,731.45, 21,306,418.25 and 8,913,140.25 is: 12,299,896.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,439,731.45 : 21,306,418.25 = 8,913,140.25 : x
  2. Step 2: Convert to fraction form
    15,439,731.45/21,306,418.25 = 8,913,140.25/x
  3. Step 3: Cross multiply
    15,439,731.45x = 21,306,418.25 × 8,913,140.25
  4. Step 4: Simplify right side
    15,439,731.45x = 189,907,094,042,843.88
  5. Step 5: Solve for x
    x = 189,907,094,042,843.88/15,439,731.45
  6. Step 6: Final answer
    x = 12,299,896.19

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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.