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Finding the Fourth Proportional to 18,296.40, 27,400.80 and 11,609.64

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Solution

The fourth proportional to 18,296.40, 27,400.80 and 11,609.64 is: 17,386.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,296.40 : 27,400.80 = 11,609.64 : x
  2. Step 2: Convert to fraction form
    18,296.40/27,400.80 = 11,609.64/x
  3. Step 3: Cross multiply
    18,296.40x = 27,400.80 × 11,609.64
  4. Step 4: Simplify right side
    18,296.40x = 318,113,423.71
  5. Step 5: Solve for x
    x = 318,113,423.71/18,296.40
  6. Step 6: Final answer
    x = 17,386.67

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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.