Home / 20,392.02-28,141.03-11,439.51

Finding the Fourth Proportional to 20,392.02, 28,141.03 and 11,439.51

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Solution

The fourth proportional to 20,392.02, 28,141.03 and 11,439.51 is: 15,786.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,392.02 : 28,141.03 = 11,439.51 : x
  2. Step 2: Convert to fraction form
    20,392.02/28,141.03 = 11,439.51/x
  3. Step 3: Cross multiply
    20,392.02x = 28,141.03 × 11,439.51
  4. Step 4: Simplify right side
    20,392.02x = 321,919,628.99
  5. Step 5: Solve for x
    x = 321,919,628.99/20,392.02
  6. Step 6: Final answer
    x = 15,786.55

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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.