Home / 21,031,163.40-31,521,861.90-8,900,603.40

Finding the Fourth Proportional to 21,031,163.40, 31,521,861.90 and 8,900,603.40

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Solution

The fourth proportional to 21,031,163.40, 31,521,861.90 and 8,900,603.40 is: 13,340,374.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,031,163.40 : 31,521,861.90 = 8,900,603.40 : x
  2. Step 2: Convert to fraction form
    21,031,163.40/31,521,861.90 = 8,900,603.40/x
  3. Step 3: Cross multiply
    21,031,163.40x = 31,521,861.90 × 8,900,603.40
  4. Step 4: Simplify right side
    21,031,163.40x = 280,563,591,201,470.47
  5. Step 5: Solve for x
    x = 280,563,591,201,470.47/21,031,163.40
  6. Step 6: Final answer
    x = 13,340,374.28

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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.