Home / 13,187.16-18,196.92-7,521.48

Finding the Fourth Proportional to 13,187.16, 18,196.92 and 7,521.48

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Solution

The fourth proportional to 13,187.16, 18,196.92 and 7,521.48 is: 10,378.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,187.16 : 18,196.92 = 7,521.48 : x
  2. Step 2: Convert to fraction form
    13,187.16/18,196.92 = 7,521.48/x
  3. Step 3: Cross multiply
    13,187.16x = 18,196.92 × 7,521.48
  4. Step 4: Simplify right side
    13,187.16x = 136,867,739.82
  5. Step 5: Solve for x
    x = 136,867,739.82/13,187.16
  6. Step 6: Final answer
    x = 10,378.87

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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.