Home / 28,390.30-42,591.39-9,668.86

Finding the Fourth Proportional to 28,390.30, 42,591.39 and 9,668.86

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Solution

The fourth proportional to 28,390.30, 42,591.39 and 9,668.86 is: 14,505.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,390.30 : 42,591.39 = 9,668.86 : x
  2. Step 2: Convert to fraction form
    28,390.30/42,591.39 = 9,668.86/x
  3. Step 3: Cross multiply
    28,390.30x = 42,591.39 × 9,668.86
  4. Step 4: Simplify right side
    28,390.30x = 411,810,187.12
  5. Step 5: Solve for x
    x = 411,810,187.12/28,390.30
  6. Step 6: Final answer
    x = 14,505.31

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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.