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Finding the Fourth Proportional to 13,871,563.20, 20,807,344.80 and 10,512,331.20

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Solution

The fourth proportional to 13,871,563.20, 20,807,344.80 and 10,512,331.20 is: 15,768,496.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,871,563.20 : 20,807,344.80 = 10,512,331.20 : x
  2. Step 2: Convert to fraction form
    13,871,563.20/20,807,344.80 = 10,512,331.20/x
  3. Step 3: Cross multiply
    13,871,563.20x = 20,807,344.80 × 10,512,331.20
  4. Step 4: Simplify right side
    13,871,563.20x = 218,733,699,930,197.75
  5. Step 5: Solve for x
    x = 218,733,699,930,197.75/13,871,563.20
  6. Step 6: Final answer
    x = 15,768,496.80

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1.5x scale

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.