Home / 12,871.05-19,275.14-7,933.90

Finding the Fourth Proportional to 12,871.05, 19,275.14 and 7,933.90

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Solution

The fourth proportional to 12,871.05, 19,275.14 and 7,933.90 is: 11,881.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,871.05 : 19,275.14 = 7,933.90 : x
  2. Step 2: Convert to fraction form
    12,871.05/19,275.14 = 7,933.90/x
  3. Step 3: Cross multiply
    12,871.05x = 19,275.14 × 7,933.90
  4. Step 4: Simplify right side
    12,871.05x = 152,927,033.25
  5. Step 5: Solve for x
    x = 152,927,033.25/12,871.05
  6. Step 6: Final answer
    x = 11,881.47

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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.