Home / 15,918.20-21,968.61-9,203.43

Finding the Fourth Proportional to 15,918.20, 21,968.61 and 9,203.43

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Solution

The fourth proportional to 15,918.20, 21,968.61 and 9,203.43 is: 12,701.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,918.20 : 21,968.61 = 9,203.43 : x
  2. Step 2: Convert to fraction form
    15,918.20/21,968.61 = 9,203.43/x
  3. Step 3: Cross multiply
    15,918.20x = 21,968.61 × 9,203.43
  4. Step 4: Simplify right side
    15,918.20x = 202,186,564.33
  5. Step 5: Solve for x
    x = 202,186,564.33/15,918.20
  6. Step 6: Final answer
    x = 12,701.60

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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.