Home / 28,785.03-39,700.83-18,716.73

Finding the Fourth Proportional to 28,785.03, 39,700.83 and 18,716.73

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Solution

The fourth proportional to 28,785.03, 39,700.83 and 18,716.73 is: 25,814.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,785.03 : 39,700.83 = 18,716.73 : x
  2. Step 2: Convert to fraction form
    28,785.03/39,700.83 = 18,716.73/x
  3. Step 3: Cross multiply
    28,785.03x = 39,700.83 × 18,716.73
  4. Step 4: Simplify right side
    28,785.03x = 743,069,715.89
  5. Step 5: Solve for x
    x = 743,069,715.89/28,785.03
  6. Step 6: Final answer
    x = 25,814.45

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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.