Home / 18,723,028.80-28,084,543.20-15,321,806.40

Finding the Fourth Proportional to 18,723,028.80, 28,084,543.20 and 15,321,806.40

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Solution

The fourth proportional to 18,723,028.80, 28,084,543.20 and 15,321,806.40 is: 22,982,709.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,723,028.80 : 28,084,543.20 = 15,321,806.40 : x
  2. Step 2: Convert to fraction form
    18,723,028.80/28,084,543.20 = 15,321,806.40/x
  3. Step 3: Cross multiply
    18,723,028.80x = 28,084,543.20 × 15,321,806.40
  4. Step 4: Simplify right side
    18,723,028.80x = 430,305,933,742,836.50
  5. Step 5: Solve for x
    x = 430,305,933,742,836.50/18,723,028.80
  6. Step 6: Final answer
    x = 22,982,709.60

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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.