Home / 12,112.08-16,725.60-7,643.76

Finding the Fourth Proportional to 12,112.08, 16,725.60 and 7,643.76

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Solution

The fourth proportional to 12,112.08, 16,725.60 and 7,643.76 is: 10,555.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,112.08 : 16,725.60 = 7,643.76 : x
  2. Step 2: Convert to fraction form
    12,112.08/16,725.60 = 7,643.76/x
  3. Step 3: Cross multiply
    12,112.08x = 16,725.60 × 7,643.76
  4. Step 4: Simplify right side
    12,112.08x = 127,846,472.26
  5. Step 5: Solve for x
    x = 127,846,472.26/12,112.08
  6. Step 6: Final answer
    x = 10,555.29

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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.