Home / 21,924.16-30,255.20-11,988.16

Finding the Fourth Proportional to 21,924.16, 30,255.20 and 11,988.16

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Solution

The fourth proportional to 21,924.16, 30,255.20 and 11,988.16 is: 16,543.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,924.16 : 30,255.20 = 11,988.16 : x
  2. Step 2: Convert to fraction form
    21,924.16/30,255.20 = 11,988.16/x
  3. Step 3: Cross multiply
    21,924.16x = 30,255.20 × 11,988.16
  4. Step 4: Simplify right side
    21,924.16x = 362,704,178.43
  5. Step 5: Solve for x
    x = 362,704,178.43/21,924.16
  6. Step 6: Final answer
    x = 16,543.58

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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.