Home / 21,957.84-30,304.68-12,528.24

Finding the Fourth Proportional to 21,957.84, 30,304.68 and 12,528.24

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Solution

The fourth proportional to 21,957.84, 30,304.68 and 12,528.24 is: 17,290.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,957.84 : 30,304.68 = 12,528.24 : x
  2. Step 2: Convert to fraction form
    21,957.84/30,304.68 = 12,528.24/x
  3. Step 3: Cross multiply
    21,957.84x = 30,304.68 × 12,528.24
  4. Step 4: Simplify right side
    21,957.84x = 379,664,304.16
  5. Step 5: Solve for x
    x = 379,664,304.16/21,957.84
  6. Step 6: Final answer
    x = 17,290.60

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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.