Home / 13,742.06-18,979.52-9,284.22

Finding the Fourth Proportional to 13,742.06, 18,979.52 and 9,284.22

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Solution

The fourth proportional to 13,742.06, 18,979.52 and 9,284.22 is: 12,822.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,742.06 : 18,979.52 = 9,284.22 : x
  2. Step 2: Convert to fraction form
    13,742.06/18,979.52 = 9,284.22/x
  3. Step 3: Cross multiply
    13,742.06x = 18,979.52 × 9,284.22
  4. Step 4: Simplify right side
    13,742.06x = 176,209,992.75
  5. Step 5: Solve for x
    x = 176,209,992.75/13,742.06
  6. Step 6: Final answer
    x = 12,822.68

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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.