Home / 15,899.61-21,942.20-9,186.12

Finding the Fourth Proportional to 15,899.61, 21,942.20 and 9,186.12

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Solution

The fourth proportional to 15,899.61, 21,942.20 and 9,186.12 is: 12,677.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,899.61 : 21,942.20 = 9,186.12 : x
  2. Step 2: Convert to fraction form
    15,899.61/21,942.20 = 9,186.12/x
  3. Step 3: Cross multiply
    15,899.61x = 21,942.20 × 9,186.12
  4. Step 4: Simplify right side
    15,899.61x = 201,563,636.33
  5. Step 5: Solve for x
    x = 201,563,636.33/15,899.61
  6. Step 6: Final answer
    x = 12,677.27

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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.