Home / 12,743.40-19,115.08-8,359.82

Finding the Fourth Proportional to 12,743.40, 19,115.08 and 8,359.82

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Solution

The fourth proportional to 12,743.40, 19,115.08 and 8,359.82 is: 12,539.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,743.40 : 19,115.08 = 8,359.82 : x
  2. Step 2: Convert to fraction form
    12,743.40/19,115.08 = 8,359.82/x
  3. Step 3: Cross multiply
    12,743.40x = 19,115.08 × 8,359.82
  4. Step 4: Simplify right side
    12,743.40x = 159,798,628.09
  5. Step 5: Solve for x
    x = 159,798,628.09/12,743.40
  6. Step 6: Final answer
    x = 12,539.72

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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.