Home / 14,139.45-19,512.66-7,765.86

Finding the Fourth Proportional to 14,139.45, 19,512.66 and 7,765.86

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Solution

The fourth proportional to 14,139.45, 19,512.66 and 7,765.86 is: 10,717.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,139.45 : 19,512.66 = 7,765.86 : x
  2. Step 2: Convert to fraction form
    14,139.45/19,512.66 = 7,765.86/x
  3. Step 3: Cross multiply
    14,139.45x = 19,512.66 × 7,765.86
  4. Step 4: Simplify right side
    14,139.45x = 151,532,585.79
  5. Step 5: Solve for x
    x = 151,532,585.79/14,139.45
  6. Step 6: Final answer
    x = 10,717.01

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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.