Home / 20,859,881.70-31,289,822.55-19,796,999.70

Finding the Fourth Proportional to 20,859,881.70, 31,289,822.55 and 19,796,999.70

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Solution

The fourth proportional to 20,859,881.70, 31,289,822.55 and 19,796,999.70 is: 29,695,499.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,859,881.70 : 31,289,822.55 = 19,796,999.70 : x
  2. Step 2: Convert to fraction form
    20,859,881.70/31,289,822.55 = 19,796,999.70/x
  3. Step 3: Cross multiply
    20,859,881.70x = 31,289,822.55 × 19,796,999.70
  4. Step 4: Simplify right side
    20,859,881.70x = 619,444,607,635,403.25
  5. Step 5: Solve for x
    x = 619,444,607,635,403.25/20,859,881.70
  6. Step 6: Final answer
    x = 29,695,499.55

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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.