Home / 13,739.79-20,611.20-4,377.63

Finding the Fourth Proportional to 13,739.79, 20,611.20 and 4,377.63

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Solution

The fourth proportional to 13,739.79, 20,611.20 and 4,377.63 is: 6,566.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,739.79 : 20,611.20 = 4,377.63 : x
  2. Step 2: Convert to fraction form
    13,739.79/20,611.20 = 4,377.63/x
  3. Step 3: Cross multiply
    13,739.79x = 20,611.20 × 4,377.63
  4. Step 4: Simplify right side
    13,739.79x = 90,228,207.46
  5. Step 5: Solve for x
    x = 90,228,207.46/13,739.79
  6. Step 6: Final answer
    x = 6,566.93

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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.