Home / 10,078,572.91-15,108,907.20-3,929,137.15

Finding the Fourth Proportional to 10,078,572.91, 15,108,907.20 and 3,929,137.15

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Solution

The fourth proportional to 10,078,572.91, 15,108,907.20 and 3,929,137.15 is: 5,890,215.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,078,572.91 : 15,108,907.20 = 3,929,137.15 : x
  2. Step 2: Convert to fraction form
    10,078,572.91/15,108,907.20 = 3,929,137.15/x
  3. Step 3: Cross multiply
    10,078,572.91x = 15,108,907.20 × 3,929,137.15
  4. Step 4: Simplify right side
    10,078,572.91x = 59,364,968,575,422.48
  5. Step 5: Solve for x
    x = 59,364,968,575,422.48/10,078,572.91
  6. Step 6: Final answer
    x = 5,890,215.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.