Home / 21,843,102.72-30,149,477.28-12,678,697.92

Finding the Fourth Proportional to 21,843,102.72, 30,149,477.28 and 12,678,697.92

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Solution

The fourth proportional to 21,843,102.72, 30,149,477.28 and 12,678,697.92 is: 17,500,083.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,843,102.72 : 30,149,477.28 = 12,678,697.92 : x
  2. Step 2: Convert to fraction form
    21,843,102.72/30,149,477.28 = 12,678,697.92/x
  3. Step 3: Cross multiply
    21,843,102.72x = 30,149,477.28 × 12,678,697.92
  4. Step 4: Simplify right side
    21,843,102.72x = 382,256,114,879,023.25
  5. Step 5: Solve for x
    x = 382,256,114,879,023.25/21,843,102.72
  6. Step 6: Final answer
    x = 17,500,083.20

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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.