Home / 18,912.80-26,089.68-11,459.36

Finding the Fourth Proportional to 18,912.80, 26,089.68 and 11,459.36

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Solution

The fourth proportional to 18,912.80, 26,089.68 and 11,459.36 is: 15,807.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,912.80 : 26,089.68 = 11,459.36 : x
  2. Step 2: Convert to fraction form
    18,912.80/26,089.68 = 11,459.36/x
  3. Step 3: Cross multiply
    18,912.80x = 26,089.68 × 11,459.36
  4. Step 4: Simplify right side
    18,912.80x = 298,971,035.40
  5. Step 5: Solve for x
    x = 298,971,035.40/18,912.80
  6. Step 6: Final answer
    x = 15,807.87

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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.