Home / 28,580.39-42,871.61-9,861.04

Finding the Fourth Proportional to 28,580.39, 42,871.61 and 9,861.04

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Solution

The fourth proportional to 28,580.39, 42,871.61 and 9,861.04 is: 14,791.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,580.39 : 42,871.61 = 9,861.04 : x
  2. Step 2: Convert to fraction form
    28,580.39/42,871.61 = 9,861.04/x
  3. Step 3: Cross multiply
    28,580.39x = 42,871.61 × 9,861.04
  4. Step 4: Simplify right side
    28,580.39x = 422,758,578.55
  5. Step 5: Solve for x
    x = 422,758,578.55/28,580.39
  6. Step 6: Final answer
    x = 14,791.91

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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.