Home / 15,707.91-21,668.27-9,954.84

Finding the Fourth Proportional to 15,707.91, 21,668.27 and 9,954.84

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Solution

The fourth proportional to 15,707.91, 21,668.27 and 9,954.84 is: 13,732.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,707.91 : 21,668.27 = 9,954.84 : x
  2. Step 2: Convert to fraction form
    15,707.91/21,668.27 = 9,954.84/x
  3. Step 3: Cross multiply
    15,707.91x = 21,668.27 × 9,954.84
  4. Step 4: Simplify right side
    15,707.91x = 215,704,111.15
  5. Step 5: Solve for x
    x = 215,704,111.15/15,707.91
  6. Step 6: Final answer
    x = 13,732.20

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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.