Home / 20,742,004.65-31,103,675.77-7,958,260.65

Finding the Fourth Proportional to 20,742,004.65, 31,103,675.77 and 7,958,260.65

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Solution

The fourth proportional to 20,742,004.65, 31,103,675.77 and 7,958,260.65 is: 11,933,810.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,742,004.65 : 31,103,675.77 = 7,958,260.65 : x
  2. Step 2: Convert to fraction form
    20,742,004.65/31,103,675.77 = 7,958,260.65/x
  3. Step 3: Cross multiply
    20,742,004.65x = 31,103,675.77 × 7,958,260.65
  4. Step 4: Simplify right side
    20,742,004.65x = 247,531,158,950,749.47
  5. Step 5: Solve for x
    x = 247,531,158,950,749.47/20,742,004.65
  6. Step 6: Final answer
    x = 11,933,810.79

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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.