Home / 21,277.97-29,355.66-21,245.16

Finding the Fourth Proportional to 21,277.97, 29,355.66 and 21,245.16

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Solution

The fourth proportional to 21,277.97, 29,355.66 and 21,245.16 is: 29,310.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,277.97 : 29,355.66 = 21,245.16 : x
  2. Step 2: Convert to fraction form
    21,277.97/29,355.66 = 21,245.16/x
  3. Step 3: Cross multiply
    21,277.97x = 29,355.66 × 21,245.16
  4. Step 4: Simplify right side
    21,277.97x = 623,665,693.61
  5. Step 5: Solve for x
    x = 623,665,693.61/21,277.97
  6. Step 6: Final answer
    x = 29,310.40

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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.