Home / 18,723,903.20-28,023,646.80-13,591,743.20

Finding the Fourth Proportional to 18,723,903.20, 28,023,646.80 and 13,591,743.20

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Solution

The fourth proportional to 18,723,903.20, 28,023,646.80 and 13,591,743.20 is: 20,342,457.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,723,903.20 : 28,023,646.80 = 13,591,743.20 : x
  2. Step 2: Convert to fraction form
    18,723,903.20/28,023,646.80 = 13,591,743.20/x
  3. Step 3: Cross multiply
    18,723,903.20x = 28,023,646.80 × 13,591,743.20
  4. Step 4: Simplify right side
    18,723,903.20x = 380,890,210,833,101.75
  5. Step 5: Solve for x
    x = 380,890,210,833,101.75/18,723,903.20
  6. Step 6: Final answer
    x = 20,342,457.81

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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.