Home / 14,503,860.72-20,015,367.68-7,978,158.88

Finding the Fourth Proportional to 14,503,860.72, 20,015,367.68 and 7,978,158.88

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Solution

The fourth proportional to 14,503,860.72, 20,015,367.68 and 7,978,158.88 is: 11,009,881.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,503,860.72 : 20,015,367.68 = 7,978,158.88 : x
  2. Step 2: Convert to fraction form
    14,503,860.72/20,015,367.68 = 7,978,158.88/x
  3. Step 3: Cross multiply
    14,503,860.72x = 20,015,367.68 × 7,978,158.88
  4. Step 4: Simplify right side
    14,503,860.72x = 159,685,783,392,657
  5. Step 5: Solve for x
    x = 159,685,783,392,657/14,503,860.72
  6. Step 6: Final answer
    x = 11,009,881.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.