Home / 28,391.10-39,186.48-16,461

Finding the Fourth Proportional to 28,391.10, 39,186.48 and 16,461

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Solution

The fourth proportional to 28,391.10, 39,186.48 and 16,461 is: 22,720.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,391.10 : 39,186.48 = 16,461 : x
  2. Step 2: Convert to fraction form
    28,391.10/39,186.48 = 16,461/x
  3. Step 3: Cross multiply
    28,391.10x = 39,186.48 × 16,461
  4. Step 4: Simplify right side
    28,391.10x = 645,048,647.28
  5. Step 5: Solve for x
    x = 645,048,647.28/28,391.10
  6. Step 6: Final answer
    x = 22,720.10

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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.