Home / 19,971.56-29,957.57-5,179.58

Finding the Fourth Proportional to 19,971.56, 29,957.57 and 5,179.58

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Solution

The fourth proportional to 19,971.56, 29,957.57 and 5,179.58 is: 7,769.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,971.56 : 29,957.57 = 5,179.58 : x
  2. Step 2: Convert to fraction form
    19,971.56/29,957.57 = 5,179.58/x
  3. Step 3: Cross multiply
    19,971.56x = 29,957.57 × 5,179.58
  4. Step 4: Simplify right side
    19,971.56x = 155,167,727.45
  5. Step 5: Solve for x
    x = 155,167,727.45/19,971.56
  6. Step 6: Final answer
    x = 7,769.43

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1.5x scale

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.