Home / 21,528.21-29,707.97-11,968.74

Finding the Fourth Proportional to 21,528.21, 29,707.97 and 11,968.74

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Solution

The fourth proportional to 21,528.21, 29,707.97 and 11,968.74 is: 16,516.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,528.21 : 29,707.97 = 11,968.74 : x
  2. Step 2: Convert to fraction form
    21,528.21/29,707.97 = 11,968.74/x
  3. Step 3: Cross multiply
    21,528.21x = 29,707.97 × 11,968.74
  4. Step 4: Simplify right side
    21,528.21x = 355,566,825.46
  5. Step 5: Solve for x
    x = 355,566,825.46/21,528.21
  6. Step 6: Final answer
    x = 16,516.32

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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.