Home / 18,752,656.68-28,109,803.41-12,688,028.73

Finding the Fourth Proportional to 18,752,656.68, 28,109,803.41 and 12,688,028.73

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Solution

The fourth proportional to 18,752,656.68, 28,109,803.41 and 12,688,028.73 is: 19,019,064.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,752,656.68 : 28,109,803.41 = 12,688,028.73 : x
  2. Step 2: Convert to fraction form
    18,752,656.68/28,109,803.41 = 12,688,028.73/x
  3. Step 3: Cross multiply
    18,752,656.68x = 28,109,803.41 × 12,688,028.73
  4. Step 4: Simplify right side
    18,752,656.68x = 356,657,993,260,732
  5. Step 5: Solve for x
    x = 356,657,993,260,732/18,752,656.68
  6. Step 6: Final answer
    x = 19,019,064.84

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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.