Home / 21,115,365.35-31,661,501.72-16,766,440.80

Finding the Fourth Proportional to 21,115,365.35, 31,661,501.72 and 16,766,440.80

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Solution

The fourth proportional to 21,115,365.35, 31,661,501.72 and 16,766,440.80 is: 25,140,492.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,115,365.35 : 31,661,501.72 = 16,766,440.80 : x
  2. Step 2: Convert to fraction form
    21,115,365.35/31,661,501.72 = 16,766,440.80/x
  3. Step 3: Cross multiply
    21,115,365.35x = 31,661,501.72 × 16,766,440.80
  4. Step 4: Simplify right side
    21,115,365.35x = 530,850,694,227,478.19
  5. Step 5: Solve for x
    x = 530,850,694,227,478.19/21,115,365.35
  6. Step 6: Final answer
    x = 25,140,492.97

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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.