Home / 21,955.35-30,298.12-11,883.55

Finding the Fourth Proportional to 21,955.35, 30,298.12 and 11,883.55

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Solution

The fourth proportional to 21,955.35, 30,298.12 and 11,883.55 is: 16,399.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,955.35 : 30,298.12 = 11,883.55 : x
  2. Step 2: Convert to fraction form
    21,955.35/30,298.12 = 11,883.55/x
  3. Step 3: Cross multiply
    21,955.35x = 30,298.12 × 11,883.55
  4. Step 4: Simplify right side
    21,955.35x = 360,049,223.93
  5. Step 5: Solve for x
    x = 360,049,223.93/21,955.35
  6. Step 6: Final answer
    x = 16,399.16

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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.