Home / 20,529.20-28,330.32-11,097.84

Finding the Fourth Proportional to 20,529.20, 28,330.32 and 11,097.84

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Solution

The fourth proportional to 20,529.20, 28,330.32 and 11,097.84 is: 15,315.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,529.20 : 28,330.32 = 11,097.84 : x
  2. Step 2: Convert to fraction form
    20,529.20/28,330.32 = 11,097.84/x
  3. Step 3: Cross multiply
    20,529.20x = 28,330.32 × 11,097.84
  4. Step 4: Simplify right side
    20,529.20x = 314,405,358.51
  5. Step 5: Solve for x
    x = 314,405,358.51/20,529.20
  6. Step 6: Final answer
    x = 15,315.03

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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.