Home / 21,716.76-29,968.56-12,285.12

Finding the Fourth Proportional to 21,716.76, 29,968.56 and 12,285.12

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Solution

The fourth proportional to 21,716.76, 29,968.56 and 12,285.12 is: 16,953.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,716.76 : 29,968.56 = 12,285.12 : x
  2. Step 2: Convert to fraction form
    21,716.76/29,968.56 = 12,285.12/x
  3. Step 3: Cross multiply
    21,716.76x = 29,968.56 × 12,285.12
  4. Step 4: Simplify right side
    21,716.76x = 368,167,355.83
  5. Step 5: Solve for x
    x = 368,167,355.83/21,716.76
  6. Step 6: Final answer
    x = 16,953.14

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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.