Home / 21,962.16-30,305.04-13,007.60

Finding the Fourth Proportional to 21,962.16, 30,305.04 and 13,007.60

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Solution

The fourth proportional to 21,962.16, 30,305.04 and 13,007.60 is: 17,948.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,962.16 : 30,305.04 = 13,007.60 : x
  2. Step 2: Convert to fraction form
    21,962.16/30,305.04 = 13,007.60/x
  3. Step 3: Cross multiply
    21,962.16x = 30,305.04 × 13,007.60
  4. Step 4: Simplify right side
    21,962.16x = 394,195,838.30
  5. Step 5: Solve for x
    x = 394,195,838.30/21,962.16
  6. Step 6: Final answer
    x = 17,948.86

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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.