Home / 12,490.56-18,739.08-3,725.28

Finding the Fourth Proportional to 12,490.56, 18,739.08 and 3,725.28

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Solution

The fourth proportional to 12,490.56, 18,739.08 and 3,725.28 is: 5,588.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,490.56 : 18,739.08 = 3,725.28 : x
  2. Step 2: Convert to fraction form
    12,490.56/18,739.08 = 3,725.28/x
  3. Step 3: Cross multiply
    12,490.56x = 18,739.08 × 3,725.28
  4. Step 4: Simplify right side
    12,490.56x = 69,808,319.94
  5. Step 5: Solve for x
    x = 69,808,319.94/12,490.56
  6. Step 6: Final answer
    x = 5,588.89

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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.