Home / 20,958,723.60-31,375,099.80-12,434,672.40

Finding the Fourth Proportional to 20,958,723.60, 31,375,099.80 and 12,434,672.40

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Solution

The fourth proportional to 20,958,723.60, 31,375,099.80 and 12,434,672.40 is: 18,614,639.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,958,723.60 : 31,375,099.80 = 12,434,672.40 : x
  2. Step 2: Convert to fraction form
    20,958,723.60/31,375,099.80 = 12,434,672.40/x
  3. Step 3: Cross multiply
    20,958,723.60x = 31,375,099.80 × 12,434,672.40
  4. Step 4: Simplify right side
    20,958,723.60x = 390,139,087,530,305.56
  5. Step 5: Solve for x
    x = 390,139,087,530,305.56/20,958,723.60
  6. Step 6: Final answer
    x = 18,614,639.66

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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.