Home / 21,315,638.85-31,961,219.12-8,346,604.92

Finding the Fourth Proportional to 21,315,638.85, 31,961,219.12 and 8,346,604.92

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Solution

The fourth proportional to 21,315,638.85, 31,961,219.12 and 8,346,604.92 is: 12,515,114.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,315,638.85 : 31,961,219.12 = 8,346,604.92 : x
  2. Step 2: Convert to fraction form
    21,315,638.85/31,961,219.12 = 8,346,604.92/x
  3. Step 3: Cross multiply
    21,315,638.85x = 31,961,219.12 × 8,346,604.92
  4. Step 4: Simplify right side
    21,315,638.85x = 266,767,668,596,384
  5. Step 5: Solve for x
    x = 266,767,668,596,384/21,315,638.85
  6. Step 6: Final answer
    x = 12,515,114.87

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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.