Home / 13,179.51-18,187.52-7,211.07

Finding the Fourth Proportional to 13,179.51, 18,187.52 and 7,211.07

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Solution

The fourth proportional to 13,179.51, 18,187.52 and 7,211.07 is: 9,951.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,179.51 : 18,187.52 = 7,211.07 : x
  2. Step 2: Convert to fraction form
    13,179.51/18,187.52 = 7,211.07/x
  3. Step 3: Cross multiply
    13,179.51x = 18,187.52 × 7,211.07
  4. Step 4: Simplify right side
    13,179.51x = 131,151,443.79
  5. Step 5: Solve for x
    x = 131,151,443.79/13,179.51
  6. Step 6: Final answer
    x = 9,951.16

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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.