Home / 12,628.13-18,947.90-5,514.57

Finding the Fourth Proportional to 12,628.13, 18,947.90 and 5,514.57

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Solution

The fourth proportional to 12,628.13, 18,947.90 and 5,514.57 is: 8,274.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,628.13 : 18,947.90 = 5,514.57 : x
  2. Step 2: Convert to fraction form
    12,628.13/18,947.90 = 5,514.57/x
  3. Step 3: Cross multiply
    12,628.13x = 18,947.90 × 5,514.57
  4. Step 4: Simplify right side
    12,628.13x = 104,489,534.69
  5. Step 5: Solve for x
    x = 104,489,534.69/12,628.13
  6. Step 6: Final answer
    x = 8,274.35

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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.