Home / 21,962.76-30,307.38-13,011.12

Finding the Fourth Proportional to 21,962.76, 30,307.38 and 13,011.12

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Solution

The fourth proportional to 21,962.76, 30,307.38 and 13,011.12 is: 17,954.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,962.76 : 30,307.38 = 13,011.12 : x
  2. Step 2: Convert to fraction form
    21,962.76/30,307.38 = 13,011.12/x
  3. Step 3: Cross multiply
    21,962.76x = 30,307.38 × 13,011.12
  4. Step 4: Simplify right side
    21,962.76x = 394,332,958.07
  5. Step 5: Solve for x
    x = 394,332,958.07/21,962.76
  6. Step 6: Final answer
    x = 17,954.62

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Double scale
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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.