Home / 20,918,920.38-31,360,409.61-7,270,293.66

Finding the Fourth Proportional to 20,918,920.38, 31,360,409.61 and 7,270,293.66

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Solution

The fourth proportional to 20,918,920.38, 31,360,409.61 and 7,270,293.66 is: 10,899,194.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,918,920.38 : 31,360,409.61 = 7,270,293.66 : x
  2. Step 2: Convert to fraction form
    20,918,920.38/31,360,409.61 = 7,270,293.66/x
  3. Step 3: Cross multiply
    20,918,920.38x = 31,360,409.61 × 7,270,293.66
  4. Step 4: Simplify right side
    20,918,920.38x = 227,999,387,162,586.06
  5. Step 5: Solve for x
    x = 227,999,387,162,586.06/20,918,920.38
  6. Step 6: Final answer
    x = 10,899,194.75

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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.