Home / 12,215.36-18,321.60-5,461.76

Finding the Fourth Proportional to 12,215.36, 18,321.60 and 5,461.76

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Solution

The fourth proportional to 12,215.36, 18,321.60 and 5,461.76 is: 8,192.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,215.36 : 18,321.60 = 5,461.76 : x
  2. Step 2: Convert to fraction form
    12,215.36/18,321.60 = 5,461.76/x
  3. Step 3: Cross multiply
    12,215.36x = 18,321.60 × 5,461.76
  4. Step 4: Simplify right side
    12,215.36x = 100,068,182.02
  5. Step 5: Solve for x
    x = 100,068,182.02/12,215.36
  6. Step 6: Final answer
    x = 8,192.00

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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.