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Finding the Fourth Proportional to 21,202.93, 31,794.31 and 8,718.13

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Solution

The fourth proportional to 21,202.93, 31,794.31 and 8,718.13 is: 13,073.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,202.93 : 31,794.31 = 8,718.13 : x
  2. Step 2: Convert to fraction form
    21,202.93/31,794.31 = 8,718.13/x
  3. Step 3: Cross multiply
    21,202.93x = 31,794.31 × 8,718.13
  4. Step 4: Simplify right side
    21,202.93x = 277,186,927.84
  5. Step 5: Solve for x
    x = 277,186,927.84/21,202.93
  6. Step 6: Final answer
    x = 13,073.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.