Home / 20,373,649.79-28,106,362.38-12,109,015.66

Finding the Fourth Proportional to 20,373,649.79, 28,106,362.38 and 12,109,015.66

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Solution

The fourth proportional to 20,373,649.79, 28,106,362.38 and 12,109,015.66 is: 16,704,929.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,373,649.79 : 28,106,362.38 = 12,109,015.66 : x
  2. Step 2: Convert to fraction form
    20,373,649.79/28,106,362.38 = 12,109,015.66/x
  3. Step 3: Cross multiply
    20,373,649.79x = 28,106,362.38 × 12,109,015.66
  4. Step 4: Simplify right side
    20,373,649.79x = 340,340,382,144,509.81
  5. Step 5: Solve for x
    x = 340,340,382,144,509.81/20,373,649.79
  6. Step 6: Final answer
    x = 16,704,929.44

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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.