Home / 21,295,019.76-29,387,127.26-12,128,515.44

Finding the Fourth Proportional to 21,295,019.76, 29,387,127.26 and 12,128,515.44

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Solution

The fourth proportional to 21,295,019.76, 29,387,127.26 and 12,128,515.44 is: 16,737,351.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,295,019.76 : 29,387,127.26 = 12,128,515.44 : x
  2. Step 2: Convert to fraction form
    21,295,019.76/29,387,127.26 = 12,128,515.44/x
  3. Step 3: Cross multiply
    21,295,019.76x = 29,387,127.26 × 12,128,515.44
  4. Step 4: Simplify right side
    21,295,019.76x = 356,422,226,710,154.88
  5. Step 5: Solve for x
    x = 356,422,226,710,154.88/21,295,019.76
  6. Step 6: Final answer
    x = 16,737,351.30

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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.