Home / 13,871,999.70-20,807,999.55-12,777,138.90

Finding the Fourth Proportional to 13,871,999.70, 20,807,999.55 and 12,777,138.90

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Solution

The fourth proportional to 13,871,999.70, 20,807,999.55 and 12,777,138.90 is: 19,165,708.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,871,999.70 : 20,807,999.55 = 12,777,138.90 : x
  2. Step 2: Convert to fraction form
    13,871,999.70/20,807,999.55 = 12,777,138.90/x
  3. Step 3: Cross multiply
    13,871,999.70x = 20,807,999.55 × 12,777,138.90
  4. Step 4: Simplify right side
    13,871,999.70x = 265,866,700,481,487.50
  5. Step 5: Solve for x
    x = 265,866,700,481,487.50/13,871,999.70
  6. Step 6: Final answer
    x = 19,165,708.35

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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.