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Finding the Fourth Proportional to 21,058.01, 31,559.70 and 8,563.49

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Solution

The fourth proportional to 21,058.01, 31,559.70 and 8,563.49 is: 12,834.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,058.01 : 31,559.70 = 8,563.49 : x
  2. Step 2: Convert to fraction form
    21,058.01/31,559.70 = 8,563.49/x
  3. Step 3: Cross multiply
    21,058.01x = 31,559.70 × 8,563.49
  4. Step 4: Simplify right side
    21,058.01x = 270,261,286.37
  5. Step 5: Solve for x
    x = 270,261,286.37/21,058.01
  6. Step 6: Final answer
    x = 12,834.13

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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.