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Finding the Fourth Proportional to 25,321.80, 37,950.30 and 12,145.80

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Solution

The fourth proportional to 25,321.80, 37,950.30 and 12,145.80 is: 18,203.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,321.80 : 37,950.30 = 12,145.80 : x
  2. Step 2: Convert to fraction form
    25,321.80/37,950.30 = 12,145.80/x
  3. Step 3: Cross multiply
    25,321.80x = 37,950.30 × 12,145.80
  4. Step 4: Simplify right side
    25,321.80x = 460,936,753.74
  5. Step 5: Solve for x
    x = 460,936,753.74/25,321.80
  6. Step 6: Final answer
    x = 18,203.16

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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.