Home / 21,923.28-30,254.08-12,491.84

Finding the Fourth Proportional to 21,923.28, 30,254.08 and 12,491.84

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Solution

The fourth proportional to 21,923.28, 30,254.08 and 12,491.84 is: 17,238.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,923.28 : 30,254.08 = 12,491.84 : x
  2. Step 2: Convert to fraction form
    21,923.28/30,254.08 = 12,491.84/x
  3. Step 3: Cross multiply
    21,923.28x = 30,254.08 × 12,491.84
  4. Step 4: Simplify right side
    21,923.28x = 377,929,126.71
  5. Step 5: Solve for x
    x = 377,929,126.71/21,923.28
  6. Step 6: Final answer
    x = 17,238.71

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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.