Home / 19,815.96-29,727.68-7,970.68

Finding the Fourth Proportional to 19,815.96, 29,727.68 and 7,970.68

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Solution

The fourth proportional to 19,815.96, 29,727.68 and 7,970.68 is: 11,957.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,815.96 : 29,727.68 = 7,970.68 : x
  2. Step 2: Convert to fraction form
    19,815.96/29,727.68 = 7,970.68/x
  3. Step 3: Cross multiply
    19,815.96x = 29,727.68 × 7,970.68
  4. Step 4: Simplify right side
    19,815.96x = 236,949,824.42
  5. Step 5: Solve for x
    x = 236,949,824.42/19,815.96
  6. Step 6: Final answer
    x = 11,957.52

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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.