Home / 20,390,993.51-28,141,967.20-11,451,572.85

Finding the Fourth Proportional to 20,390,993.51, 28,141,967.20 and 11,451,572.85

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Solution

The fourth proportional to 20,390,993.51, 28,141,967.20 and 11,451,572.85 is: 15,804,516.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,390,993.51 : 28,141,967.20 = 11,451,572.85 : x
  2. Step 2: Convert to fraction form
    20,390,993.51/28,141,967.20 = 11,451,572.85/x
  3. Step 3: Cross multiply
    20,390,993.51x = 28,141,967.20 × 11,451,572.85
  4. Step 4: Simplify right side
    20,390,993.51x = 322,269,787,421,029.62
  5. Step 5: Solve for x
    x = 322,269,787,421,029.62/20,390,993.51
  6. Step 6: Final answer
    x = 15,804,516.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.