Home / 25,530.80-38,309.63-12,218.85

Finding the Fourth Proportional to 25,530.80, 38,309.63 and 12,218.85

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Solution

The fourth proportional to 25,530.80, 38,309.63 and 12,218.85 is: 18,334.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,530.80 : 38,309.63 = 12,218.85 : x
  2. Step 2: Convert to fraction form
    25,530.80/38,309.63 = 12,218.85/x
  3. Step 3: Cross multiply
    25,530.80x = 38,309.63 × 12,218.85
  4. Step 4: Simplify right side
    25,530.80x = 468,099,561.43
  5. Step 5: Solve for x
    x = 468,099,561.43/25,530.80
  6. Step 6: Final answer
    x = 18,334.70

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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.