Home / 13,050.40-18,011.28-8,860

Finding the Fourth Proportional to 13,050.40, 18,011.28 and 8,860

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Solution

The fourth proportional to 13,050.40, 18,011.28 and 8,860 is: 12,227.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,050.40 : 18,011.28 = 8,860 : x
  2. Step 2: Convert to fraction form
    13,050.40/18,011.28 = 8,860/x
  3. Step 3: Cross multiply
    13,050.40x = 18,011.28 × 8,860
  4. Step 4: Simplify right side
    13,050.40x = 159,579,940.80
  5. Step 5: Solve for x
    x = 159,579,940.80/13,050.40
  6. Step 6: Final answer
    x = 12,227.97

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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.