Home / 20,918,705.19-31,360,086.76-7,270,078.32

Finding the Fourth Proportional to 20,918,705.19, 31,360,086.76 and 7,270,078.32

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Solution

The fourth proportional to 20,918,705.19, 31,360,086.76 and 7,270,078.32 is: 10,898,871.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,918,705.19 : 31,360,086.76 = 7,270,078.32 : x
  2. Step 2: Convert to fraction form
    20,918,705.19/31,360,086.76 = 7,270,078.32/x
  3. Step 3: Cross multiply
    20,918,705.19x = 31,360,086.76 × 7,270,078.32
  4. Step 4: Simplify right side
    20,918,705.19x = 227,990,286,867,195.06
  5. Step 5: Solve for x
    x = 227,990,286,867,195.06/20,918,705.19
  6. Step 6: Final answer
    x = 10,898,871.84

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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.