Home / 13,997.20-20,977.40-12,036.08

Finding the Fourth Proportional to 13,997.20, 20,977.40 and 12,036.08

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Solution

The fourth proportional to 13,997.20, 20,977.40 and 12,036.08 is: 18,038.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,997.20 : 20,977.40 = 12,036.08 : x
  2. Step 2: Convert to fraction form
    13,997.20/20,977.40 = 12,036.08/x
  3. Step 3: Cross multiply
    13,997.20x = 20,977.40 × 12,036.08
  4. Step 4: Simplify right side
    13,997.20x = 252,485,664.59
  5. Step 5: Solve for x
    x = 252,485,664.59/13,997.20
  6. Step 6: Final answer
    x = 18,038.30

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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.