Home / 28,982.68-39,992.28-16,405

Finding the Fourth Proportional to 28,982.68, 39,992.28 and 16,405

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Solution

The fourth proportional to 28,982.68, 39,992.28 and 16,405 is: 22,636.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,982.68 : 39,992.28 = 16,405 : x
  2. Step 2: Convert to fraction form
    28,982.68/39,992.28 = 16,405/x
  3. Step 3: Cross multiply
    28,982.68x = 39,992.28 × 16,405
  4. Step 4: Simplify right side
    28,982.68x = 656,073,353.40
  5. Step 5: Solve for x
    x = 656,073,353.40/28,982.68
  6. Step 6: Final answer
    x = 22,636.74

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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.