Home / 15,859.07-21,880.54-9,143.79

Finding the Fourth Proportional to 15,859.07, 21,880.54 and 9,143.79

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Solution

The fourth proportional to 15,859.07, 21,880.54 and 9,143.79 is: 12,615.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,859.07 : 21,880.54 = 9,143.79 : x
  2. Step 2: Convert to fraction form
    15,859.07/21,880.54 = 9,143.79/x
  3. Step 3: Cross multiply
    15,859.07x = 21,880.54 × 9,143.79
  4. Step 4: Simplify right side
    15,859.07x = 200,070,992.22
  5. Step 5: Solve for x
    x = 200,070,992.22/15,859.07
  6. Step 6: Final answer
    x = 12,615.56

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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.