Home / 20,885,402.20-31,328,103.30-11,910,861.40

Finding the Fourth Proportional to 20,885,402.20, 31,328,103.30 and 11,910,861.40

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Solution

The fourth proportional to 20,885,402.20, 31,328,103.30 and 11,910,861.40 is: 17,866,292.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,885,402.20 : 31,328,103.30 = 11,910,861.40 : x
  2. Step 2: Convert to fraction form
    20,885,402.20/31,328,103.30 = 11,910,861.40/x
  3. Step 3: Cross multiply
    20,885,402.20x = 31,328,103.30 × 11,910,861.40
  4. Step 4: Simplify right side
    20,885,402.20x = 373,144,696,331,182.62
  5. Step 5: Solve for x
    x = 373,144,696,331,182.62/20,885,402.20
  6. Step 6: Final answer
    x = 17,866,292.10

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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.