Home / 21,549.28-29,736.92-12,117.28

Finding the Fourth Proportional to 21,549.28, 29,736.92 and 12,117.28

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Solution

The fourth proportional to 21,549.28, 29,736.92 and 12,117.28 is: 16,721.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,549.28 : 29,736.92 = 12,117.28 : x
  2. Step 2: Convert to fraction form
    21,549.28/29,736.92 = 12,117.28/x
  3. Step 3: Cross multiply
    21,549.28x = 29,736.92 × 12,117.28
  4. Step 4: Simplify right side
    21,549.28x = 360,330,585.98
  5. Step 5: Solve for x
    x = 360,330,585.98/21,549.28
  6. Step 6: Final answer
    x = 16,721.24

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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.