Home / 21,953.44-30,287.16-12,997.72

Finding the Fourth Proportional to 21,953.44, 30,287.16 and 12,997.72

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Solution

The fourth proportional to 21,953.44, 30,287.16 and 12,997.72 is: 17,931.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,953.44 : 30,287.16 = 12,997.72 : x
  2. Step 2: Convert to fraction form
    21,953.44/30,287.16 = 12,997.72/x
  3. Step 3: Cross multiply
    21,953.44x = 30,287.16 × 12,997.72
  4. Step 4: Simplify right side
    21,953.44x = 393,664,025.28
  5. Step 5: Solve for x
    x = 393,664,025.28/21,953.44
  6. Step 6: Final answer
    x = 17,931.77

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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.