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Finding the Fourth Proportional to 13,508,978.28, 20,238,041.72 and 6,677,554.92

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Solution

The fourth proportional to 13,508,978.28, 20,238,041.72 and 6,677,554.92 is: 10,003,764.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,508,978.28 : 20,238,041.72 = 6,677,554.92 : x
  2. Step 2: Convert to fraction form
    13,508,978.28/20,238,041.72 = 6,677,554.92/x
  3. Step 3: Cross multiply
    13,508,978.28x = 20,238,041.72 × 6,677,554.92
  4. Step 4: Simplify right side
    13,508,978.28x = 135,140,635,058,551.25
  5. Step 5: Solve for x
    x = 135,140,635,058,551.25/13,508,978.28
  6. Step 6: Final answer
    x = 10,003,764.33

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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.