Home / 28,511.38-42,772.21-9,786.59

Finding the Fourth Proportional to 28,511.38, 42,772.21 and 9,786.59

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Solution

The fourth proportional to 28,511.38, 42,772.21 and 9,786.59 is: 14,681.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,511.38 : 42,772.21 = 9,786.59 : x
  2. Step 2: Convert to fraction form
    28,511.38/42,772.21 = 9,786.59/x
  3. Step 3: Cross multiply
    28,511.38x = 42,772.21 × 9,786.59
  4. Step 4: Simplify right side
    28,511.38x = 418,594,082.66
  5. Step 5: Solve for x
    x = 418,594,082.66/28,511.38
  6. Step 6: Final answer
    x = 14,681.65

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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.