Home / 19,725.45-29,606.40-9,871.80

Finding the Fourth Proportional to 19,725.45, 29,606.40 and 9,871.80

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Solution

The fourth proportional to 19,725.45, 29,606.40 and 9,871.80 is: 14,816.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,725.45 : 29,606.40 = 9,871.80 : x
  2. Step 2: Convert to fraction form
    19,725.45/29,606.40 = 9,871.80/x
  3. Step 3: Cross multiply
    19,725.45x = 29,606.40 × 9,871.80
  4. Step 4: Simplify right side
    19,725.45x = 292,268,459.52
  5. Step 5: Solve for x
    x = 292,268,459.52/19,725.45
  6. Step 6: Final answer
    x = 14,816.82

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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.