Home / 18,925.83-28,359.57-11,985.75

Finding the Fourth Proportional to 18,925.83, 28,359.57 and 11,985.75

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Solution

The fourth proportional to 18,925.83, 28,359.57 and 11,985.75 is: 17,960.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,925.83 : 28,359.57 = 11,985.75 : x
  2. Step 2: Convert to fraction form
    18,925.83/28,359.57 = 11,985.75/x
  3. Step 3: Cross multiply
    18,925.83x = 28,359.57 × 11,985.75
  4. Step 4: Simplify right side
    18,925.83x = 339,910,716.13
  5. Step 5: Solve for x
    x = 339,910,716.13/18,925.83
  6. Step 6: Final answer
    x = 17,960.15

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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.