Home / 21,621.11-29,827.76-13,549.86

Finding the Fourth Proportional to 21,621.11, 29,827.76 and 13,549.86

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Solution

The fourth proportional to 21,621.11, 29,827.76 and 13,549.86 is: 18,692.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,621.11 : 29,827.76 = 13,549.86 : x
  2. Step 2: Convert to fraction form
    21,621.11/29,827.76 = 13,549.86/x
  3. Step 3: Cross multiply
    21,621.11x = 29,827.76 × 13,549.86
  4. Step 4: Simplify right side
    21,621.11x = 404,161,904.36
  5. Step 5: Solve for x
    x = 404,161,904.36/21,621.11
  6. Step 6: Final answer
    x = 18,692.93

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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.