Home / 21,031,243.40-31,529,369.10-8,910,014.60

Finding the Fourth Proportional to 21,031,243.40, 31,529,369.10 and 8,910,014.60

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Solution

The fourth proportional to 21,031,243.40, 31,529,369.10 and 8,910,014.60 is: 13,357,609.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,031,243.40 : 31,529,369.10 = 8,910,014.60 : x
  2. Step 2: Convert to fraction form
    21,031,243.40/31,529,369.10 = 8,910,014.60/x
  3. Step 3: Cross multiply
    21,031,243.40x = 31,529,369.10 × 8,910,014.60
  4. Step 4: Simplify right side
    21,031,243.40x = 280,927,139,009,788.88
  5. Step 5: Solve for x
    x = 280,927,139,009,788.88/21,031,243.40
  6. Step 6: Final answer
    x = 13,357,609.61

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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.