Home / 28,196.30-38,889.11-18,125.78

Finding the Fourth Proportional to 28,196.30, 38,889.11 and 18,125.78

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Solution

The fourth proportional to 28,196.30, 38,889.11 and 18,125.78 is: 24,999.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,196.30 : 38,889.11 = 18,125.78 : x
  2. Step 2: Convert to fraction form
    28,196.30/38,889.11 = 18,125.78/x
  3. Step 3: Cross multiply
    28,196.30x = 38,889.11 × 18,125.78
  4. Step 4: Simplify right side
    28,196.30x = 704,895,303.12
  5. Step 5: Solve for x
    x = 704,895,303.12/28,196.30
  6. Step 6: Final answer
    x = 24,999.57

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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.