Home / 20,939,913.60-31,435,458.30-11,848,335.90

Finding the Fourth Proportional to 20,939,913.60, 31,435,458.30 and 11,848,335.90

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Solution

The fourth proportional to 20,939,913.60, 31,435,458.30 and 11,848,335.90 is: 17,786,982.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,939,913.60 : 31,435,458.30 = 11,848,335.90 : x
  2. Step 2: Convert to fraction form
    20,939,913.60/31,435,458.30 = 11,848,335.90/x
  3. Step 3: Cross multiply
    20,939,913.60x = 31,435,458.30 × 11,848,335.90
  4. Step 4: Simplify right side
    20,939,913.60x = 372,457,869,108,843
  5. Step 5: Solve for x
    x = 372,457,869,108,843/20,939,913.60
  6. Step 6: Final answer
    x = 17,786,982.13

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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.