Home / 21,732.84-30,004.56-20,392.56

Finding the Fourth Proportional to 21,732.84, 30,004.56 and 20,392.56

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Solution

The fourth proportional to 21,732.84, 30,004.56 and 20,392.56 is: 28,154.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,732.84 : 30,004.56 = 20,392.56 : x
  2. Step 2: Convert to fraction form
    21,732.84/30,004.56 = 20,392.56/x
  3. Step 3: Cross multiply
    21,732.84x = 30,004.56 × 20,392.56
  4. Step 4: Simplify right side
    21,732.84x = 611,869,790.07
  5. Step 5: Solve for x
    x = 611,869,790.07/21,732.84
  6. Step 6: Final answer
    x = 28,154.16

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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.