Home / 11,401.30-15,744.66-10,780.06

Finding the Fourth Proportional to 11,401.30, 15,744.66 and 10,780.06

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Solution

The fourth proportional to 11,401.30, 15,744.66 and 10,780.06 is: 14,886.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,401.30 : 15,744.66 = 10,780.06 : x
  2. Step 2: Convert to fraction form
    11,401.30/15,744.66 = 10,780.06/x
  3. Step 3: Cross multiply
    11,401.30x = 15,744.66 × 10,780.06
  4. Step 4: Simplify right side
    11,401.30x = 169,728,379.48
  5. Step 5: Solve for x
    x = 169,728,379.48/11,401.30
  6. Step 6: Final answer
    x = 14,886.76

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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.