Home / 18,274.36-27,393.26-8,420.76

Finding the Fourth Proportional to 18,274.36, 27,393.26 and 8,420.76

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Solution

The fourth proportional to 18,274.36, 27,393.26 and 8,420.76 is: 12,622.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,274.36 : 27,393.26 = 8,420.76 : x
  2. Step 2: Convert to fraction form
    18,274.36/27,393.26 = 8,420.76/x
  3. Step 3: Cross multiply
    18,274.36x = 27,393.26 × 8,420.76
  4. Step 4: Simplify right side
    18,274.36x = 230,672,068.08
  5. Step 5: Solve for x
    x = 230,672,068.08/18,274.36
  6. Step 6: Final answer
    x = 12,622.72

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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.