Home / 20,778,303.65-31,140,275.93-11,172,999.65

Finding the Fourth Proportional to 20,778,303.65, 31,140,275.93 and 11,172,999.65

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Solution

The fourth proportional to 20,778,303.65, 31,140,275.93 and 11,172,999.65 is: 16,744,884.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,778,303.65 : 31,140,275.93 = 11,172,999.65 : x
  2. Step 2: Convert to fraction form
    20,778,303.65/31,140,275.93 = 11,172,999.65/x
  3. Step 3: Cross multiply
    20,778,303.65x = 31,140,275.93 × 11,172,999.65
  4. Step 4: Simplify right side
    20,778,303.65x = 347,930,292,010,928.44
  5. Step 5: Solve for x
    x = 347,930,292,010,928.44/20,778,303.65
  6. Step 6: Final answer
    x = 16,744,884.37

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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.