Home / 11,440.71-15,780.04-10,499.54

Finding the Fourth Proportional to 11,440.71, 15,780.04 and 10,499.54

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Solution

The fourth proportional to 11,440.71, 15,780.04 and 10,499.54 is: 14,481.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,440.71 : 15,780.04 = 10,499.54 : x
  2. Step 2: Convert to fraction form
    11,440.71/15,780.04 = 10,499.54/x
  3. Step 3: Cross multiply
    11,440.71x = 15,780.04 × 10,499.54
  4. Step 4: Simplify right side
    11,440.71x = 165,683,161.18
  5. Step 5: Solve for x
    x = 165,683,161.18/11,440.71
  6. Step 6: Final answer
    x = 14,481.90

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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.