Home / 20,684,009.53-28,543,012.01-11,857,132.84

Finding the Fourth Proportional to 20,684,009.53, 28,543,012.01 and 11,857,132.84

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Solution

The fourth proportional to 20,684,009.53, 28,543,012.01 and 11,857,132.84 is: 16,362,315.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,684,009.53 : 28,543,012.01 = 11,857,132.84 : x
  2. Step 2: Convert to fraction form
    20,684,009.53/28,543,012.01 = 11,857,132.84/x
  3. Step 3: Cross multiply
    20,684,009.53x = 28,543,012.01 × 11,857,132.84
  4. Step 4: Simplify right side
    20,684,009.53x = 338,438,284,925,642.19
  5. Step 5: Solve for x
    x = 338,438,284,925,642.19/20,684,009.53
  6. Step 6: Final answer
    x = 16,362,315.27

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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.