Home / 18,787,120.88-28,171,799.16-7,277,978.48

Finding the Fourth Proportional to 18,787,120.88, 28,171,799.16 and 7,277,978.48

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Solution

The fourth proportional to 18,787,120.88, 28,171,799.16 and 7,277,978.48 is: 10,913,526.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,787,120.88 : 28,171,799.16 = 7,277,978.48 : x
  2. Step 2: Convert to fraction form
    18,787,120.88/28,171,799.16 = 7,277,978.48/x
  3. Step 3: Cross multiply
    18,787,120.88x = 28,171,799.16 × 7,277,978.48
  4. Step 4: Simplify right side
    18,787,120.88x = 205,033,748,029,362.09
  5. Step 5: Solve for x
    x = 205,033,748,029,362.09/18,787,120.88
  6. Step 6: Final answer
    x = 10,913,526.84

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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.