Home / 12,521.80-18,784.86-3,755.72

Finding the Fourth Proportional to 12,521.80, 18,784.86 and 3,755.72

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Solution

The fourth proportional to 12,521.80, 18,784.86 and 3,755.72 is: 5,634.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,521.80 : 18,784.86 = 3,755.72 : x
  2. Step 2: Convert to fraction form
    12,521.80/18,784.86 = 3,755.72/x
  3. Step 3: Cross multiply
    12,521.80x = 18,784.86 × 3,755.72
  4. Step 4: Simplify right side
    12,521.80x = 70,550,674.40
  5. Step 5: Solve for x
    x = 70,550,674.40/12,521.80
  6. Step 6: Final answer
    x = 5,634.23

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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.