Home / 12,526.40-18,789.90-4,206.69

Finding the Fourth Proportional to 12,526.40, 18,789.90 and 4,206.69

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Solution

The fourth proportional to 12,526.40, 18,789.90 and 4,206.69 is: 6,310.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,526.40 : 18,789.90 = 4,206.69 : x
  2. Step 2: Convert to fraction form
    12,526.40/18,789.90 = 4,206.69/x
  3. Step 3: Cross multiply
    12,526.40x = 18,789.90 × 4,206.69
  4. Step 4: Simplify right side
    12,526.40x = 79,043,284.43
  5. Step 5: Solve for x
    x = 79,043,284.43/12,526.40
  6. Step 6: Final answer
    x = 6,310.14

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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.