Home / 21,548.16-29,738.88-12,116.48

Finding the Fourth Proportional to 21,548.16, 29,738.88 and 12,116.48

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Solution

The fourth proportional to 21,548.16, 29,738.88 and 12,116.48 is: 16,722.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,548.16 : 29,738.88 = 12,116.48 : x
  2. Step 2: Convert to fraction form
    21,548.16/29,738.88 = 12,116.48/x
  3. Step 3: Cross multiply
    21,548.16x = 29,738.88 × 12,116.48
  4. Step 4: Simplify right side
    21,548.16x = 360,330,544.74
  5. Step 5: Solve for x
    x = 360,330,544.74/21,548.16
  6. Step 6: Final answer
    x = 16,722.10

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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.