Home / 21,456,072.30-32,184,108.45-12,386,145.90

Finding the Fourth Proportional to 21,456,072.30, 32,184,108.45 and 12,386,145.90

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Solution

The fourth proportional to 21,456,072.30, 32,184,108.45 and 12,386,145.90 is: 18,579,218.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,456,072.30 : 32,184,108.45 = 12,386,145.90 : x
  2. Step 2: Convert to fraction form
    21,456,072.30/32,184,108.45 = 12,386,145.90/x
  3. Step 3: Cross multiply
    21,456,072.30x = 32,184,108.45 × 12,386,145.90
  4. Step 4: Simplify right side
    21,456,072.30x = 398,637,062,923,122.88
  5. Step 5: Solve for x
    x = 398,637,062,923,122.88/21,456,072.30
  6. Step 6: Final answer
    x = 18,579,218.85

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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.