Home / 12,165.21-18,266.91-7,256.74

Finding the Fourth Proportional to 12,165.21, 18,266.91 and 7,256.74

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Solution

The fourth proportional to 12,165.21, 18,266.91 and 7,256.74 is: 10,896.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,165.21 : 18,266.91 = 7,256.74 : x
  2. Step 2: Convert to fraction form
    12,165.21/18,266.91 = 7,256.74/x
  3. Step 3: Cross multiply
    12,165.21x = 18,266.91 × 7,256.74
  4. Step 4: Simplify right side
    12,165.21x = 132,558,216.47
  5. Step 5: Solve for x
    x = 132,558,216.47/12,165.21
  6. Step 6: Final answer
    x = 10,896.50

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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.