Home / 12,787.44-17,646.84-7,485.36

Finding the Fourth Proportional to 12,787.44, 17,646.84 and 7,485.36

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Solution

The fourth proportional to 12,787.44, 17,646.84 and 7,485.36 is: 10,329.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,787.44 : 17,646.84 = 7,485.36 : x
  2. Step 2: Convert to fraction form
    12,787.44/17,646.84 = 7,485.36/x
  3. Step 3: Cross multiply
    12,787.44x = 17,646.84 × 7,485.36
  4. Step 4: Simplify right side
    12,787.44x = 132,092,950.26
  5. Step 5: Solve for x
    x = 132,092,950.26/12,787.44
  6. Step 6: Final answer
    x = 10,329.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.