Home / 13,702.82-20,514.18-12,389.64

Finding the Fourth Proportional to 13,702.82, 20,514.18 and 12,389.64

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Solution

The fourth proportional to 13,702.82, 20,514.18 and 12,389.64 is: 18,548.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,702.82 : 20,514.18 = 12,389.64 : x
  2. Step 2: Convert to fraction form
    13,702.82/20,514.18 = 12,389.64/x
  3. Step 3: Cross multiply
    13,702.82x = 20,514.18 × 12,389.64
  4. Step 4: Simplify right side
    13,702.82x = 254,163,305.10
  5. Step 5: Solve for x
    x = 254,163,305.10/13,702.82
  6. Step 6: Final answer
    x = 18,548.25

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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.