Home / 20,693,428.89-31,039,111.54-7,738,627.15

Finding the Fourth Proportional to 20,693,428.89, 31,039,111.54 and 7,738,627.15

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Solution

The fourth proportional to 20,693,428.89, 31,039,111.54 and 7,738,627.15 is: 11,607,554.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,693,428.89 : 31,039,111.54 = 7,738,627.15 : x
  2. Step 2: Convert to fraction form
    20,693,428.89/31,039,111.54 = 7,738,627.15/x
  3. Step 3: Cross multiply
    20,693,428.89x = 31,039,111.54 × 7,738,627.15
  4. Step 4: Simplify right side
    20,693,428.89x = 240,200,111,081,433.59
  5. Step 5: Solve for x
    x = 240,200,111,081,433.59/20,693,428.89
  6. Step 6: Final answer
    x = 11,607,554.86

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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.