Home / 21,476.34-31,993.08-20,823.43

Finding the Fourth Proportional to 21,476.34, 31,993.08 and 20,823.43

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Solution

The fourth proportional to 21,476.34, 31,993.08 and 20,823.43 is: 31,020.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,476.34 : 31,993.08 = 20,823.43 : x
  2. Step 2: Convert to fraction form
    21,476.34/31,993.08 = 20,823.43/x
  3. Step 3: Cross multiply
    21,476.34x = 31,993.08 × 20,823.43
  4. Step 4: Simplify right side
    21,476.34x = 666,205,563.78
  5. Step 5: Solve for x
    x = 666,205,563.78/21,476.34
  6. Step 6: Final answer
    x = 31,020.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.