Home / 13,700.86-20,549.68-3,840.93

Finding the Fourth Proportional to 13,700.86, 20,549.68 and 3,840.93

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Solution

The fourth proportional to 13,700.86, 20,549.68 and 3,840.93 is: 5,760.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,700.86 : 20,549.68 = 3,840.93 : x
  2. Step 2: Convert to fraction form
    13,700.86/20,549.68 = 3,840.93/x
  3. Step 3: Cross multiply
    13,700.86x = 20,549.68 × 3,840.93
  4. Step 4: Simplify right side
    13,700.86x = 78,929,872.80
  5. Step 5: Solve for x
    x = 78,929,872.80/13,700.86
  6. Step 6: Final answer
    x = 5,760.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.