Home / 13,727.75-20,492.19-12,700.55

Finding the Fourth Proportional to 13,727.75, 20,492.19 and 12,700.55

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Solution

The fourth proportional to 13,727.75, 20,492.19 and 12,700.55 is: 18,958.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,727.75 : 20,492.19 = 12,700.55 : x
  2. Step 2: Convert to fraction form
    13,727.75/20,492.19 = 12,700.55/x
  3. Step 3: Cross multiply
    13,727.75x = 20,492.19 × 12,700.55
  4. Step 4: Simplify right side
    13,727.75x = 260,262,019.67
  5. Step 5: Solve for x
    x = 260,262,019.67/13,727.75
  6. Step 6: Final answer
    x = 18,958.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.