Home / 28,180.94-38,890.14-15,433.89

Finding the Fourth Proportional to 28,180.94, 38,890.14 and 15,433.89

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Solution

The fourth proportional to 28,180.94, 38,890.14 and 15,433.89 is: 21,299.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,180.94 : 38,890.14 = 15,433.89 : x
  2. Step 2: Convert to fraction form
    28,180.94/38,890.14 = 15,433.89/x
  3. Step 3: Cross multiply
    28,180.94x = 38,890.14 × 15,433.89
  4. Step 4: Simplify right side
    28,180.94x = 600,226,179.59
  5. Step 5: Solve for x
    x = 600,226,179.59/28,180.94
  6. Step 6: Final answer
    x = 21,299.01

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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.