Home / 12,729.71-17,559.63-8,958.35

Finding the Fourth Proportional to 12,729.71, 17,559.63 and 8,958.35

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Solution

The fourth proportional to 12,729.71, 17,559.63 and 8,958.35 is: 12,357.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,729.71 : 17,559.63 = 8,958.35 : x
  2. Step 2: Convert to fraction form
    12,729.71/17,559.63 = 8,958.35/x
  3. Step 3: Cross multiply
    12,729.71x = 17,559.63 × 8,958.35
  4. Step 4: Simplify right side
    12,729.71x = 157,305,223.61
  5. Step 5: Solve for x
    x = 157,305,223.61/12,729.71
  6. Step 6: Final answer
    x = 12,357.33

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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.