Home / 20,868,343.72-28,801,768.03-11,578,906.51

Finding the Fourth Proportional to 20,868,343.72, 28,801,768.03 and 11,578,906.51

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Solution

The fourth proportional to 20,868,343.72, 28,801,768.03 and 11,578,906.51 is: 15,980,807.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,868,343.72 : 28,801,768.03 = 11,578,906.51 : x
  2. Step 2: Convert to fraction form
    20,868,343.72/28,801,768.03 = 11,578,906.51/x
  3. Step 3: Cross multiply
    20,868,343.72x = 28,801,768.03 × 11,578,906.51
  4. Step 4: Simplify right side
    20,868,343.72x = 333,492,979,468,254.94
  5. Step 5: Solve for x
    x = 333,492,979,468,254.94/20,868,343.72
  6. Step 6: Final answer
    x = 15,980,807.29

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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.