Home / 28,817.48-39,771.28-16,720.62

Finding the Fourth Proportional to 28,817.48, 39,771.28 and 16,720.62

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Solution

The fourth proportional to 28,817.48, 39,771.28 and 16,720.62 is: 23,076.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,817.48 : 39,771.28 = 16,720.62 : x
  2. Step 2: Convert to fraction form
    28,817.48/39,771.28 = 16,720.62/x
  3. Step 3: Cross multiply
    28,817.48x = 39,771.28 × 16,720.62
  4. Step 4: Simplify right side
    28,817.48x = 665,000,459.79
  5. Step 5: Solve for x
    x = 665,000,459.79/28,817.48
  6. Step 6: Final answer
    x = 23,076.29

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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.