Home / 20,684,564.12-30,951,261.28-12,168,911

Finding the Fourth Proportional to 20,684,564.12, 30,951,261.28 and 12,168,911

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Solution

The fourth proportional to 20,684,564.12, 30,951,261.28 and 12,168,911 is: 18,208,899.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,684,564.12 : 30,951,261.28 = 12,168,911 : x
  2. Step 2: Convert to fraction form
    20,684,564.12/30,951,261.28 = 12,168,911/x
  3. Step 3: Cross multiply
    20,684,564.12x = 30,951,261.28 × 12,168,911
  4. Step 4: Simplify right side
    20,684,564.12x = 376,643,143,854,066.12
  5. Step 5: Solve for x
    x = 376,643,143,854,066.12/20,684,564.12
  6. Step 6: Final answer
    x = 18,208,899.24

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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.