Home / 18,508.48-25,527.30-12,128.08

Finding the Fourth Proportional to 18,508.48, 25,527.30 and 12,128.08

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Solution

The fourth proportional to 18,508.48, 25,527.30 and 12,128.08 is: 16,727.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,508.48 : 25,527.30 = 12,128.08 : x
  2. Step 2: Convert to fraction form
    18,508.48/25,527.30 = 12,128.08/x
  3. Step 3: Cross multiply
    18,508.48x = 25,527.30 × 12,128.08
  4. Step 4: Simplify right side
    18,508.48x = 309,597,136.58
  5. Step 5: Solve for x
    x = 309,597,136.58/18,508.48
  6. Step 6: Final answer
    x = 16,727.31

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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.