Home / 15,771.88-21,776.13-9,806.23

Finding the Fourth Proportional to 15,771.88, 21,776.13 and 9,806.23

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Solution

The fourth proportional to 15,771.88, 21,776.13 and 9,806.23 is: 13,539.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,771.88 : 21,776.13 = 9,806.23 : x
  2. Step 2: Convert to fraction form
    15,771.88/21,776.13 = 9,806.23/x
  3. Step 3: Cross multiply
    15,771.88x = 21,776.13 × 9,806.23
  4. Step 4: Simplify right side
    15,771.88x = 213,541,766.51
  5. Step 5: Solve for x
    x = 213,541,766.51/15,771.88
  6. Step 6: Final answer
    x = 13,539.40

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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.