Home / 20,824.15-28,737.72-11,393.32

Finding the Fourth Proportional to 20,824.15, 28,737.72 and 11,393.32

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Solution

The fourth proportional to 20,824.15, 28,737.72 and 11,393.32 is: 15,723.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,824.15 : 28,737.72 = 11,393.32 : x
  2. Step 2: Convert to fraction form
    20,824.15/28,737.72 = 11,393.32/x
  3. Step 3: Cross multiply
    20,824.15x = 28,737.72 × 11,393.32
  4. Step 4: Simplify right side
    20,824.15x = 327,418,040.03
  5. Step 5: Solve for x
    x = 327,418,040.03/20,824.15
  6. Step 6: Final answer
    x = 15,723.00

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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.