Home / 21,929.28-30,262.36-12,497.84

Finding the Fourth Proportional to 21,929.28, 30,262.36 and 12,497.84

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Solution

The fourth proportional to 21,929.28, 30,262.36 and 12,497.84 is: 17,246.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,929.28 : 30,262.36 = 12,497.84 : x
  2. Step 2: Convert to fraction form
    21,929.28/30,262.36 = 12,497.84/x
  3. Step 3: Cross multiply
    21,929.28x = 30,262.36 × 12,497.84
  4. Step 4: Simplify right side
    21,929.28x = 378,214,133.30
  5. Step 5: Solve for x
    x = 378,214,133.30/21,929.28
  6. Step 6: Final answer
    x = 17,246.99

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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.