Home / 21,941.12-30,274.27-12,984.14

Finding the Fourth Proportional to 21,941.12, 30,274.27 and 12,984.14

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Solution

The fourth proportional to 21,941.12, 30,274.27 and 12,984.14 is: 17,915.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,941.12 : 30,274.27 = 12,984.14 : x
  2. Step 2: Convert to fraction form
    21,941.12/30,274.27 = 12,984.14/x
  3. Step 3: Cross multiply
    21,941.12x = 30,274.27 × 12,984.14
  4. Step 4: Simplify right side
    21,941.12x = 393,085,143.79
  5. Step 5: Solve for x
    x = 393,085,143.79/21,941.12
  6. Step 6: Final answer
    x = 17,915.46

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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.