Home / 20,783,953.20-31,176,642.60-6,406,906.80

Finding the Fourth Proportional to 20,783,953.20, 31,176,642.60 and 6,406,906.80

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Solution

The fourth proportional to 20,783,953.20, 31,176,642.60 and 6,406,906.80 is: 9,610,579.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,783,953.20 : 31,176,642.60 = 6,406,906.80 : x
  2. Step 2: Convert to fraction form
    20,783,953.20/31,176,642.60 = 6,406,906.80/x
  3. Step 3: Cross multiply
    20,783,953.20x = 31,176,642.60 × 6,406,906.80
  4. Step 4: Simplify right side
    20,783,953.20x = 199,745,843,475,109.69
  5. Step 5: Solve for x
    x = 199,745,843,475,109.69/20,783,953.20
  6. Step 6: Final answer
    x = 9,610,579.93

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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.