Home / 28,318.17-39,078.21-16,218.24

Finding the Fourth Proportional to 28,318.17, 39,078.21 and 16,218.24

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Solution

The fourth proportional to 28,318.17, 39,078.21 and 16,218.24 is: 22,380.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,318.17 : 39,078.21 = 16,218.24 : x
  2. Step 2: Convert to fraction form
    28,318.17/39,078.21 = 16,218.24/x
  3. Step 3: Cross multiply
    28,318.17x = 39,078.21 × 16,218.24
  4. Step 4: Simplify right side
    28,318.17x = 633,779,788.55
  5. Step 5: Solve for x
    x = 633,779,788.55/28,318.17
  6. Step 6: Final answer
    x = 22,380.68

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1.5x scale

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.