Home / 13,284.36-18,324.76-8,307.72

Finding the Fourth Proportional to 13,284.36, 18,324.76 and 8,307.72

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Solution

The fourth proportional to 13,284.36, 18,324.76 and 8,307.72 is: 11,459.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,284.36 : 18,324.76 = 8,307.72 : x
  2. Step 2: Convert to fraction form
    13,284.36/18,324.76 = 8,307.72/x
  3. Step 3: Cross multiply
    13,284.36x = 18,324.76 × 8,307.72
  4. Step 4: Simplify right side
    13,284.36x = 152,236,975.15
  5. Step 5: Solve for x
    x = 152,236,975.15/13,284.36
  6. Step 6: Final answer
    x = 11,459.87

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Double scale
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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.