Home / 20,824.95-28,739.15-11,393.51

Finding the Fourth Proportional to 20,824.95, 28,739.15 and 11,393.51

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Solution

The fourth proportional to 20,824.95, 28,739.15 and 11,393.51 is: 15,723.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,824.95 : 28,739.15 = 11,393.51 : x
  2. Step 2: Convert to fraction form
    20,824.95/28,739.15 = 11,393.51/x
  3. Step 3: Cross multiply
    20,824.95x = 28,739.15 × 11,393.51
  4. Step 4: Simplify right side
    20,824.95x = 327,439,592.25
  5. Step 5: Solve for x
    x = 327,439,592.25/20,824.95
  6. Step 6: Final answer
    x = 15,723.43

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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.