Home / 28,505.77-42,760.82-9,785.66

Finding the Fourth Proportional to 28,505.77, 42,760.82 and 9,785.66

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Solution

The fourth proportional to 28,505.77, 42,760.82 and 9,785.66 is: 14,679.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,505.77 : 42,760.82 = 9,785.66 : x
  2. Step 2: Convert to fraction form
    28,505.77/42,760.82 = 9,785.66/x
  3. Step 3: Cross multiply
    28,505.77x = 42,760.82 × 9,785.66
  4. Step 4: Simplify right side
    28,505.77x = 418,442,583.11
  5. Step 5: Solve for x
    x = 418,442,583.11/28,505.77
  6. Step 6: Final answer
    x = 14,679.23

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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.