Home / 20,590,882.12-28,415,406.28-11,298,513.20

Finding the Fourth Proportional to 20,590,882.12, 28,415,406.28 and 11,298,513.20

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Solution

The fourth proportional to 20,590,882.12, 28,415,406.28 and 11,298,513.20 is: 15,591,942.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,590,882.12 : 28,415,406.28 = 11,298,513.20 : x
  2. Step 2: Convert to fraction form
    20,590,882.12/28,415,406.28 = 11,298,513.20/x
  3. Step 3: Cross multiply
    20,590,882.12x = 28,415,406.28 × 11,298,513.20
  4. Step 4: Simplify right side
    20,590,882.12x = 321,051,842,937,942.88
  5. Step 5: Solve for x
    x = 321,051,842,937,942.88/20,590,882.12
  6. Step 6: Final answer
    x = 15,591,942.16

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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.