Home / 20,752.07-28,637.79-11,320.56

Finding the Fourth Proportional to 20,752.07, 28,637.79 and 11,320.56

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Solution

The fourth proportional to 20,752.07, 28,637.79 and 11,320.56 is: 15,622.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,752.07 : 28,637.79 = 11,320.56 : x
  2. Step 2: Convert to fraction form
    20,752.07/28,637.79 = 11,320.56/x
  3. Step 3: Cross multiply
    20,752.07x = 28,637.79 × 11,320.56
  4. Step 4: Simplify right side
    20,752.07x = 324,195,919.86
  5. Step 5: Solve for x
    x = 324,195,919.86/20,752.07
  6. Step 6: Final answer
    x = 15,622.34

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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.