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Finding the Fourth Proportional to 14,040.54, 19,375.65 and 7,752.78

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Solution

The fourth proportional to 14,040.54, 19,375.65 and 7,752.78 is: 10,698.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,040.54 : 19,375.65 = 7,752.78 : x
  2. Step 2: Convert to fraction form
    14,040.54/19,375.65 = 7,752.78/x
  3. Step 3: Cross multiply
    14,040.54x = 19,375.65 × 7,752.78
  4. Step 4: Simplify right side
    14,040.54x = 150,215,151.81
  5. Step 5: Solve for x
    x = 150,215,151.81/14,040.54
  6. Step 6: Final answer
    x = 10,698.67

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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.