Home / 13,196.74-18,207.68-7,890.54

Finding the Fourth Proportional to 13,196.74, 18,207.68 and 7,890.54

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Solution

The fourth proportional to 13,196.74, 18,207.68 and 7,890.54 is: 10,886.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,196.74 : 18,207.68 = 7,890.54 : x
  2. Step 2: Convert to fraction form
    13,196.74/18,207.68 = 7,890.54/x
  3. Step 3: Cross multiply
    13,196.74x = 18,207.68 × 7,890.54
  4. Step 4: Simplify right side
    13,196.74x = 143,668,427.35
  5. Step 5: Solve for x
    x = 143,668,427.35/13,196.74
  6. Step 6: Final answer
    x = 10,886.66

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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.