Home / 21,056,178.60-31,592,562.30-8,274,508.20

Finding the Fourth Proportional to 21,056,178.60, 31,592,562.30 and 8,274,508.20

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Solution

The fourth proportional to 21,056,178.60, 31,592,562.30 and 8,274,508.20 is: 12,415,021.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,056,178.60 : 31,592,562.30 = 8,274,508.20 : x
  2. Step 2: Convert to fraction form
    21,056,178.60/31,592,562.30 = 8,274,508.20/x
  3. Step 3: Cross multiply
    21,056,178.60x = 31,592,562.30 × 8,274,508.20
  4. Step 4: Simplify right side
    21,056,178.60x = 261,412,915,810,360.88
  5. Step 5: Solve for x
    x = 261,412,915,810,360.88/21,056,178.60
  6. Step 6: Final answer
    x = 12,415,021.77

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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.