Home / 20,753.37-28,643.18-12,257.64

Finding the Fourth Proportional to 20,753.37, 28,643.18 and 12,257.64

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Solution

The fourth proportional to 20,753.37, 28,643.18 and 12,257.64 is: 16,917.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,753.37 : 28,643.18 = 12,257.64 : x
  2. Step 2: Convert to fraction form
    20,753.37/28,643.18 = 12,257.64/x
  3. Step 3: Cross multiply
    20,753.37x = 28,643.18 × 12,257.64
  4. Step 4: Simplify right side
    20,753.37x = 351,097,727.61
  5. Step 5: Solve for x
    x = 351,097,727.61/20,753.37
  6. Step 6: Final answer
    x = 16,917.62

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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.