Home / 12,541.57-18,789.28-7,860.70

Finding the Fourth Proportional to 12,541.57, 18,789.28 and 7,860.70

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Solution

The fourth proportional to 12,541.57, 18,789.28 and 7,860.70 is: 11,776.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,541.57 : 18,789.28 = 7,860.70 : x
  2. Step 2: Convert to fraction form
    12,541.57/18,789.28 = 7,860.70/x
  3. Step 3: Cross multiply
    12,541.57x = 18,789.28 × 7,860.70
  4. Step 4: Simplify right side
    12,541.57x = 147,696,893.30
  5. Step 5: Solve for x
    x = 147,696,893.30/12,541.57
  6. Step 6: Final answer
    x = 11,776.59

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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.