Home / 18,939.60-26,139.24-12,244.64

Finding the Fourth Proportional to 18,939.60, 26,139.24 and 12,244.64

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Solution

The fourth proportional to 18,939.60, 26,139.24 and 12,244.64 is: 16,899.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,939.60 : 26,139.24 = 12,244.64 : x
  2. Step 2: Convert to fraction form
    18,939.60/26,139.24 = 12,244.64/x
  3. Step 3: Cross multiply
    18,939.60x = 26,139.24 × 12,244.64
  4. Step 4: Simplify right side
    18,939.60x = 320,065,583.67
  5. Step 5: Solve for x
    x = 320,065,583.67/18,939.60
  6. Step 6: Final answer
    x = 16,899.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.