Home / 21,263,712.60-31,895,568.90-12,156,461.40

Finding the Fourth Proportional to 21,263,712.60, 31,895,568.90 and 12,156,461.40

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Solution

The fourth proportional to 21,263,712.60, 31,895,568.90 and 12,156,461.40 is: 18,234,692.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,263,712.60 : 31,895,568.90 = 12,156,461.40 : x
  2. Step 2: Convert to fraction form
    21,263,712.60/31,895,568.90 = 12,156,461.40/x
  3. Step 3: Cross multiply
    21,263,712.60x = 31,895,568.90 × 12,156,461.40
  4. Step 4: Simplify right side
    21,263,712.60x = 387,737,252,163,890.44
  5. Step 5: Solve for x
    x = 387,737,252,163,890.44/21,263,712.60
  6. Step 6: Final answer
    x = 18,234,692.10

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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.