Home / 20,902,051.94-31,357,115.55-7,947,195.30

Finding the Fourth Proportional to 20,902,051.94, 31,357,115.55 and 7,947,195.30

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Solution

The fourth proportional to 20,902,051.94, 31,357,115.55 and 7,947,195.30 is: 11,922,328.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,902,051.94 : 31,357,115.55 = 7,947,195.30 : x
  2. Step 2: Convert to fraction form
    20,902,051.94/31,357,115.55 = 7,947,195.30/x
  3. Step 3: Cross multiply
    20,902,051.94x = 31,357,115.55 × 7,947,195.30
  4. Step 4: Simplify right side
    20,902,051.94x = 249,201,121,381,375.03
  5. Step 5: Solve for x
    x = 249,201,121,381,375.03/20,902,051.94
  6. Step 6: Final answer
    x = 11,922,328.11

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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.