Home / 18,739.80-25,861.20-10,242.09

Finding the Fourth Proportional to 18,739.80, 25,861.20 and 10,242.09

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Solution

The fourth proportional to 18,739.80, 25,861.20 and 10,242.09 is: 14,134.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,739.80 : 25,861.20 = 10,242.09 : x
  2. Step 2: Convert to fraction form
    18,739.80/25,861.20 = 10,242.09/x
  3. Step 3: Cross multiply
    18,739.80x = 25,861.20 × 10,242.09
  4. Step 4: Simplify right side
    18,739.80x = 264,872,737.91
  5. Step 5: Solve for x
    x = 264,872,737.91/18,739.80
  6. Step 6: Final answer
    x = 14,134.24

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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.