Home / 13,938.16-19,234.92-7,650.76

Finding the Fourth Proportional to 13,938.16, 19,234.92 and 7,650.76

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Solution

The fourth proportional to 13,938.16, 19,234.92 and 7,650.76 is: 10,558.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,938.16 : 19,234.92 = 7,650.76 : x
  2. Step 2: Convert to fraction form
    13,938.16/19,234.92 = 7,650.76/x
  3. Step 3: Cross multiply
    13,938.16x = 19,234.92 × 7,650.76
  4. Step 4: Simplify right side
    13,938.16x = 147,161,756.54
  5. Step 5: Solve for x
    x = 147,161,756.54/13,938.16
  6. Step 6: Final answer
    x = 10,558.19

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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.