Home / 28,309.47-42,464.39-8,318.88

Finding the Fourth Proportional to 28,309.47, 42,464.39 and 8,318.88

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Solution

The fourth proportional to 28,309.47, 42,464.39 and 8,318.88 is: 12,478.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,309.47 : 42,464.39 = 8,318.88 : x
  2. Step 2: Convert to fraction form
    28,309.47/42,464.39 = 8,318.88/x
  3. Step 3: Cross multiply
    28,309.47x = 42,464.39 × 8,318.88
  4. Step 4: Simplify right side
    28,309.47x = 353,256,169.88
  5. Step 5: Solve for x
    x = 353,256,169.88/28,309.47
  6. Step 6: Final answer
    x = 12,478.37

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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.