Home / 11,330.40-16,979.40-8,345.55

Finding the Fourth Proportional to 11,330.40, 16,979.40 and 8,345.55

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Solution

The fourth proportional to 11,330.40, 16,979.40 and 8,345.55 is: 12,506.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,330.40 : 16,979.40 = 8,345.55 : x
  2. Step 2: Convert to fraction form
    11,330.40/16,979.40 = 8,345.55/x
  3. Step 3: Cross multiply
    11,330.40x = 16,979.40 × 8,345.55
  4. Step 4: Simplify right side
    11,330.40x = 141,702,431.67
  5. Step 5: Solve for x
    x = 141,702,431.67/11,330.40
  6. Step 6: Final answer
    x = 12,506.39

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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.