Home / 12,631.07-18,959.82-5,239.92

Finding the Fourth Proportional to 12,631.07, 18,959.82 and 5,239.92

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Solution

The fourth proportional to 12,631.07, 18,959.82 and 5,239.92 is: 7,865.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,631.07 : 18,959.82 = 5,239.92 : x
  2. Step 2: Convert to fraction form
    12,631.07/18,959.82 = 5,239.92/x
  3. Step 3: Cross multiply
    12,631.07x = 18,959.82 × 5,239.92
  4. Step 4: Simplify right side
    12,631.07x = 99,347,913.81
  5. Step 5: Solve for x
    x = 99,347,913.81/12,631.07
  6. Step 6: Final answer
    x = 7,865.36

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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.