Home / 20,789,991.60-31,151,809.80-17,405,876.40

Finding the Fourth Proportional to 20,789,991.60, 31,151,809.80 and 17,405,876.40

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Solution

The fourth proportional to 20,789,991.60, 31,151,809.80 and 17,405,876.40 is: 26,081,037.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,789,991.60 : 31,151,809.80 = 17,405,876.40 : x
  2. Step 2: Convert to fraction form
    20,789,991.60/31,151,809.80 = 17,405,876.40/x
  3. Step 3: Cross multiply
    20,789,991.60x = 31,151,809.80 × 17,405,876.40
  4. Step 4: Simplify right side
    20,789,991.60x = 542,224,551,015,108.69
  5. Step 5: Solve for x
    x = 542,224,551,015,108.69/20,789,991.60
  6. Step 6: Final answer
    x = 26,081,037.52

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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.