Home / 20,890,282.32-28,829,157.12-11,723,486.40

Finding the Fourth Proportional to 20,890,282.32, 28,829,157.12 and 11,723,486.40

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Solution

The fourth proportional to 20,890,282.32, 28,829,157.12 and 11,723,486.40 is: 16,178,729.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,890,282.32 : 28,829,157.12 = 11,723,486.40 : x
  2. Step 2: Convert to fraction form
    20,890,282.32/28,829,157.12 = 11,723,486.40/x
  3. Step 3: Cross multiply
    20,890,282.32x = 28,829,157.12 × 11,723,486.40
  4. Step 4: Simplify right side
    20,890,282.32x = 337,978,231,419,783.19
  5. Step 5: Solve for x
    x = 337,978,231,419,783.19/20,890,282.32
  6. Step 6: Final answer
    x = 16,178,729.72

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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.