Home / 21,659.62-29,890.41-12,707.32

Finding the Fourth Proportional to 21,659.62, 29,890.41 and 12,707.32

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Solution

The fourth proportional to 21,659.62, 29,890.41 and 12,707.32 is: 17,536.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,659.62 : 29,890.41 = 12,707.32 : x
  2. Step 2: Convert to fraction form
    21,659.62/29,890.41 = 12,707.32/x
  3. Step 3: Cross multiply
    21,659.62x = 29,890.41 × 12,707.32
  4. Step 4: Simplify right side
    21,659.62x = 379,827,004.80
  5. Step 5: Solve for x
    x = 379,827,004.80/21,659.62
  6. Step 6: Final answer
    x = 17,536.18

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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.