Home / 20,717.82-31,084.29-12,933.18

Finding the Fourth Proportional to 20,717.82, 31,084.29 and 12,933.18

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Solution

The fourth proportional to 20,717.82, 31,084.29 and 12,933.18 is: 19,404.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,717.82 : 31,084.29 = 12,933.18 : x
  2. Step 2: Convert to fraction form
    20,717.82/31,084.29 = 12,933.18/x
  3. Step 3: Cross multiply
    20,717.82x = 31,084.29 × 12,933.18
  4. Step 4: Simplify right side
    20,717.82x = 402,018,717.74
  5. Step 5: Solve for x
    x = 402,018,717.74/20,717.82
  6. Step 6: Final answer
    x = 19,404.49

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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.