Home / 55,331.20-82,996.80-13,778.20

Finding the Fourth Proportional to 55,331.20, 82,996.80 and 13,778.20

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Solution

The fourth proportional to 55,331.20, 82,996.80 and 13,778.20 is: 20,667.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,331.20 : 82,996.80 = 13,778.20 : x
  2. Step 2: Convert to fraction form
    55,331.20/82,996.80 = 13,778.20/x
  3. Step 3: Cross multiply
    55,331.20x = 82,996.80 × 13,778.20
  4. Step 4: Simplify right side
    55,331.20x = 1,143,546,509.76
  5. Step 5: Solve for x
    x = 1,143,546,509.76/55,331.20
  6. Step 6: Final answer
    x = 20,667.30

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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.