Home / 28,429.40-39,233.03-15,682.35

Finding the Fourth Proportional to 28,429.40, 39,233.03 and 15,682.35

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Solution

The fourth proportional to 28,429.40, 39,233.03 and 15,682.35 is: 21,641.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,429.40 : 39,233.03 = 15,682.35 : x
  2. Step 2: Convert to fraction form
    28,429.40/39,233.03 = 15,682.35/x
  3. Step 3: Cross multiply
    28,429.40x = 39,233.03 × 15,682.35
  4. Step 4: Simplify right side
    28,429.40x = 615,266,176.73
  5. Step 5: Solve for x
    x = 615,266,176.73/28,429.40
  6. Step 6: Final answer
    x = 21,641.90

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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.