Home / 28,344.11-39,168.82-21,258.23

Finding the Fourth Proportional to 28,344.11, 39,168.82 and 21,258.23

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Solution

The fourth proportional to 28,344.11, 39,168.82 and 21,258.23 is: 29,376.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,344.11 : 39,168.82 = 21,258.23 : x
  2. Step 2: Convert to fraction form
    28,344.11/39,168.82 = 21,258.23/x
  3. Step 3: Cross multiply
    28,344.11x = 39,168.82 × 21,258.23
  4. Step 4: Simplify right side
    28,344.11x = 832,659,935.46
  5. Step 5: Solve for x
    x = 832,659,935.46/28,344.11
  6. Step 6: Final answer
    x = 29,376.82

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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.